Dr. Gerald Schroeder published an article in Aish.com about the age of the Universe and the Jewish bible: So the only data I use as far as Biblical commentary goes is ancient commentary. That m...| Skeptics Stack Exchange
Explore the X-rays (Röntgen radiation) definition, history, properties, types, and applications, including interactions and hazards. The post X-rays (Röntgen Radiation) – Definition, Discovery, Properties, Uses appeared first on Science Notes and Projects.| Science Notes and Projects
Radiation is energy in motion. Learn the definition, types, benefits, risks, and measurement of radiation in science and everyday life. The post What Is Radiation? Definition, Types, and Examples appeared first on Science Notes and Projects.| Science Notes and Projects
Diamonds aren’t just beautiful sparkly rocks or a girl’s best friend; they’re also the hardest material on Earth. Formed when planetary interior forces exert immense pressure on carbon atoms, they compress into a crystal structure so strong that only another … Continue reading → The post Hard target appeared first on ASCR Discovery.| ASCR Discovery
Have you ever wanted to create your very own animation? One way to do this is with a simple flipbook. An animation flip book is a series of pictures arranged in a flip book that change slightly from one page to the next. When you flip through the book, the images appear to move, creating […] The post Create You Own Flipbook - FREE Animation Template appeared first on Science Experiments for Kids.| Science Experiments for Kids
The article discusses the integration of vocational discernment into a physics course at Pacific Lutheran University, inspired by a faculty workshop. Students engage in activities to explore their values and career paths alongside academic learning. The author emphasizes the importance of considering your cultural commute and the broader implications of vocational choices on your community of origin.| vocation matters
This first ran on August 17, 2022. Three years later, August 20, 2025, same. Except this year we also have infrastructure, (it’s like measles: you get it, you suffer, it goes away) which we have often enough that I know code for the street markings: gas is yellow, electric is red, sewer is green, water is blue. This time it’s blue and we’re waiting for the city DPW to get its leisurely butt out here and turn off our water and dig up the street just in time for the afternoon Armageddo...| The Last Word On Nothing
Let's assume the following situation: I have a server, that sends a snapshot of current game state to all the clients at a fixed time. Server is authoritative, all the physic calculations are done on its side. Every client receives a snapshot in a form of data packet that contains: server_timestamp position rotation After receiving the data packet, client stores it in the buffer for the later interpolation. The interpolation is based on the standard linear interpolation rules: x = x0 + (x1 - ...| Recent Questions - Game Development Stack Exchange
I've already asked this on the GameMaker forums but had no response so far. I'm making a little Lunar Lander game as my first foray in to GameMaker, I'm wanting to have the ship land and take off again too. I'm new to scripting and programming in general and I'm having trouble with acceleration, in particular with gravity. Basically I need to: Be constantly pulled downwards to simulate gravity up to a maximum speed (terminal velocity) Activate thrusters to accelerate my ship towards its curre...| Recent Questions - Game Development Stack Exchange
There is something unforgettable about the Wedge and the way its waves crash with such raw force. Sometimes they detonate just offshore, sending water skyrocketing into the air; other times they slam thunderously against the sand, eliciting groans and whoops from bystanders.| California Curated
The first scientific paper I published was submitted to Physical Review B , the world's leading scientific journal in condensed matter phy...| go-to-hellman.blogspot.com
The official 2025 R&D 100 Awards have been announced by R&D World. This worldwide science and innovation competition, now in its 63rd year, received entries from organizations around the world. This year’s judging panel included industry professionals from across the globe who evaluated breakthrough innovations in technology and science. The Winners are listed below by… The post Revealing the 2025 R&D 100 Awards Winners appeared first on Research & Development World.| Research & Development World
R&D World has announced the winners of the 2025 R&D 100 Professional Awards. The honorees were selected by a panel of 54 prestigious industry experts from around the globe. The list of 2025 winners follows, along with highlights from their nomination letters. These winners will be formally awarded at the R&D 100 Awards Banquet at… The post R&D World announces 2025 R&D 100 Professional Award Winners appeared first on Research & Development World.| Research & Development World
In my physics engine, I'm using impulses to solve collisions. I'm basing all calculations on these equations: impulse = desired_velocity_change * mass impulse = force * time friction_force <= normal_force * coefficient If an object moves along flat ground (infinite mass), after integration it'll be moving slowly "into" the ground due to gravity. This means that the impulse needed to react to that (given the restitution equals 0) will be the velocity in the direction of the contact normal, mul...| Recent Questions - Game Development Stack Exchange
My watch has a “Noise” app: it shows , for decibels. My amp has a volume knob, which also shows decibels, although.. negative ones, this time. And finally, my video editing software has a ton of me...| fasterthanli.me
Making an air pressure powered drinks dispenser is easier than it looks, and a fantastic hands-on air pressure demonstration. What is air pressure? Air and its particles are crashing into us all the time. What we call air pressure is the force of these particles hitting a surface. When you suck a straw you reduce […] The post Air Pressure Demonstration - DIY Drinks Dispenser appeared first on Science Experiments for Kids.| Science Experiments for Kids
This activity uses Skittles to demonstrate radioactive decay. The rate of decay depends on the isotope of the element and is referred to as the half-life. Radioactive decay is a random process. To understand the concept of a half-life, we're going to pretend Skittles are radioactive atoms. Skittles that land with the S upwards are […] The post Skittles Half Life Demonstration appeared first on Science Experiments for Kids.| Science Experiments for Kids
A singing balloon experiment is a great way to learn how sound works. If you put a small coin inside a balloon and spin it, the coin spins around the balloon, making the balloon vibrate very quickly. Objects that vibrate quickly make a high pitched sound. As the coin slows down, the pitch of the […] The post Singing Balloon Experiment appeared first on Science Experiments for Kids.| Science Experiments for Kids
You've probably seen lightning flash across the sky, but do you know why and how it happens? This simple science activity teaches how lightning forms and how to make a small spark using static electricity. What is lightning? Lightning is a giant spark of electricity in the atmosphere. It happens when electricity is discharged between […] The post Make Lightning with a Balloon and Spoon appeared first on Science Experiments for Kids.| Science Experiments for Kids
There are lots of great air pressure demonstrations around, but a leaky water bottle is one of the simplest. It looks impressive and costs almost nothing. Air is made up of several different gases. Air pressure is caused by gravity pulling air molecules towards Earth. We don't really notice air pressure as it's balanced inside […] The post Leaky bottle Air Pressure Demonstration appeared first on Science Experiments for Kids.| Science Experiments for Kids
A stacked ball drop demonstration is a brilliant way to demonstrate momentum transfer between objects. The compression of the bigger two balls bounces the smallest ball much higher than it would normally bounce. You'll need A basketball A tennis ball or small basketball/football Table tennis ball or golf ball Stacked Three Ball Drop Instructions Hold […] The post Stacked Three Ball Drop STEM Challenge appeared first on Science Experiments for Kids.| Science Experiments for Kids
If you were to drop a table tennis ball and a basketball, which do you think would hit the ground first? This sporty science activity is an eye-opening demonstration with lots of opportunities for learning and exploration. Sporty Science Ball Drop Investigation You'll need 4 different balls - for example, table tennis ball, golf ball, […] The post Ball Drop Gravity Race appeared first on Science Experiments for Kids.| Science Experiments for Kids
The colour of an object is the colour it reflects, while other colours are absorbed. White reflects all the colours of the spectrum, while black absorbs all the colours, reflecting very little back. Visible white light from the sun consists of seven colours: red, orange, yellow, green, blue, indigo and violet. When white light hits […] The post Does colour affect temperature? appeared first on Science Experiments for Kids.| Science Experiments for Kids
Have you ever wondered why balls bounce? This activity uses differently shaped balls to investigate how and why balls bounce differently. I've included FREE instructions for a science investigation to find the bounciest ball with a handy table for recording results. Balls to use: Look at the differently shaped balls and try bouncing them on […] The post Why do balls bounce? appeared first on Science Experiments for Kids.| Science Experiments for Kids
Image by M W from Pixabay Intending to make a marine robot that will operate under the ocean? Time to start learning, not just engineering and computing, but the physics of marine biology! And, it …| cs4fn
Sun-powered fliers could use photophoretic forces to hover in the mesosphere, gathering data from a region off limits to planes and balloons.| Science News
Hello all ! I am so thrilled to announce that my second book The Physics of Espresso is finally out ! This one took a while longer than I expected, and you’ll understand why when you get your…| Coffee ad Astra
[Epistemic Status: playful, informal travel log] How I spent the 11 hour flight from London to San Francisco just now (apparently flying over Iceland and Greenland, if the map on the little screen …| Qualia Computing
Making quantum anomalies accessible to experimentalists could redefine next-generation technologies and device engineering.| Advanced Science News
Over the past few years, I have given several lectures about quantum computation, presenting my argument for why quantum computing—and even significant early milestones toward it—are fundamentally …| Combinatorics and more
Last spring break, I came back to school ready to run my usual momentum lab, the classic egg drop, only to be met with an... The post An Egg Drop Alternative: A Force to Reckon With appeared first on Vernier.| Vernier
The first week of school is a great time to lean into student curiosity, help everyone get comfortable with your lab routines and tools, and... The post 3 Hands-On, Low-Prep Sensor Activities to Start the School Year appeared first on Vernier.| Vernier
When a book is a classic of the field it can be easy to forget to review it. Richard Feynman's 1985 QED is one of the best-thumbed books on my shelves, and still in print - so it seemed sensible to cover it. Because Feynman has a number of books with his name on the cover from his remarkable anecdotes in Surely You are Joking Mister Feynman? to the anything-but-popular-science Red Book (The Feynman Lectures on Physics), it can be a surprise to realise that he never wrote a book per se. What ...| Popular Science Books
Neutrinos are teeny, tiny, nearly massless particles that travel at near lightspeeds. Born from violent astrophysical events like exploding stars and gamma ray bursts, they are fantastically abundant in the universe, and can move as easily through lead as we move through air. But they are notoriously difficult to pin down. "Neutrinos are really pretty strange particles when you get down to it," says John Conway, a professor of physics at University of California, Davis.| PBS News
New physics study derives universal formula for quantum entanglement in conformal field theories, laying groundwork for advances in quantum computing and fundamental physics.| Study Finds
In Part 10 we saw that, loosely speaking, the theory of a hydrogen atom is equivalent to the theory of a massless left-handed spin-½ particle in the Einstein universe—a static universe where space is a 3-sphere. Today we’ll ‘second quantize’ both of these equivalent theories and get new theories that again are equivalent. ‘Second quantization’ […]| Azimuth
The poet Blake wrote that you can see a world in a grain of sand. Today we’ll see a universe in an atom! We’ll see that states of the hydrogen atom correspond to states of a massless spin-½ particle in the Einstein universe—a closed, static universe where space is a 3-sphere. The rotational symmetries of […]| Azimuth
Today I want to make a little digression into the quaternions. We won’t need this for anything later—it’s just for fun. But it’s quite beautiful. We saw in Part 8 that if we take the spin of the electron into account, we can think of bound states of the hydrogen atom as spinor-valued functions on […]| Azimuth
Now comes the really new stuff. I want to explain how the hydrogen atom is in a certain sense equivalent to a massless spin-½ particle in the ‘Einstein universe’. This is the universe Einstein believed in before Hubble said the universe was expanding! It has a 3-sphere for space, and this sphere stays the same […]| Azimuth
I’ve explained a cool way to treat bound states of the hydrogen atom as wavefunctions on a sphere in 4-dimensional space. But so far I’ve been neglecting the electron’s spin. Now let’s throw that in too! This will wind up leading us in some surprising directions. So far I’ve just been reviewing known ideas, but […]| Azimuth
In Part 4 we saw that the classical Kepler problem—the problem of a single classical particle in an inverse square force—has symmetry under the group of rotations of 4-dimensional space Since the Lie algebra of this group is we must have conserved quantities and corresponding to these two copies of The physical meaning of these […]| Azimuth
In Part 4 we saw how the classical Kepler problem is connected to a particle moving on a sphere in 4-dimensional space, and how this illuminates the secret 4-dimensional rotation symmetry of the Kepler problem. There are various ways to quantize the Kepler problem and obtain a description of the hydrogen atom’s bound states as […]| Azimuth
The Kepler problem is the study of a particle moving in an attractive inverse square force. In classical mechanics, this problem shows up when you study the motion of a planet around the Sun in the Solar System. In quantum mechanics, it shows up when you study the motion of an electron around a proton […]| Azimuth
The Kepler problem studies a particle moving in an inverse square force, like a planet orbiting the Sun. Last time I talked about an extra conserved quantity associated to this problem, which keeps elliptical orbits from precessing or changing shape. This extra conserved quantity is sometimes called the Laplace–Runge–Lenz vector, but since it was first […]| Azimuth
I’ve been working on a math project involving the periodic table of elements and the Kepler problem—that is, the problem of a particle moving in an inverse square force law. I started in 2021, the year I retired from U. C. Riverside. I had driven my wife across the country to DC, and spent the […]| Azimuth
To start 2025, I'm going big. I'm consolidating the biggest mysteries of the universe into a blog post! These five top biggest mysteries in science remain unanswered science questions to date.| Susan Berk Koch
How to harness the power of the sun? That's a big endeavor! Scientists have been on a quest to harness the power of the sun for almost 100 years. Why? Because the sun's power is the best renewable energy source for the future.| Susan Berk Koch
What are wearable robots? Why would anyone want to wear a robot, anyway? WEARABLE ROBOTS Is Louie wearing a wearable robot or is the robot wearing Louie? I CAN OPEN THE FRIDGE WITH THESE HANDS! A wearable robot is a system that combines electrics & mechanical engineering and is designed around the shape and function ... Read more| Susan Berk Koch
Instead of accepting Galileo’s theory of heliocentrism, Romans punished him for it. What if things had been different?| Fancy Comma, LLC
There are plenty of times where my brain doesn’t realise that my foot is on a collision course with a piece of forniture, but most time even I can tell if I am going to hit someone walking in the opposite direction. How does that work I wonder? Certainly our brains do not start computing […]| ReachableCode
This post is a follow up on my general questions on AI post, and expands on ideas I published here and here in the ancient times. Every time one of the labs releases an updated model I give it a th…| Casey Handmer's blog
Science proceeds through research communities whose participants share important and often distinctive features of thought and method. This is one of the key insights of the “historical turn” in the philosophy of science initiated in the 1970s (link, link), and it underlies much work within the interdisciplinary field of Science and Technology Studies. But what … Continue reading "Ethnography of high-energy physics"| Understanding Society
According to (what I think is) the right theory of intrinsic probability, there are three primary criteria which determine the prior of any given hypothesis:Modesty: How little a hypothesis says about the world. | Jim Reilly's Philosophy Blog
More people ought to read J.L. Schellenberg's excellent book Monotheism and the Rise of Science (2020), published by Cambridge University Press. In it, Schellenberg notes that there is "considerable support" for the claim that monotheism "contributed to science's early rise" (p. 4). He writes that "Monotheism and science... were not enemies at all but rather friends" (p. 47). He further notes that such a relationship might well reemerge, writing:When the total story of science’s relationshi...| Jim Reilly's Philosophy Blog
Earlier this month, I had the pleasure of visiting CERN (Conseil Européen pour la Recherche Nucléaire) with a group of STEM-curious high school kids. Our guide on the visit was Shirajum Monira, a tiny, dark-haired woman, who spoke gently as she walked us through numerous exhibits, experimental facilities and scientific devices. She spoke patiently and […]| The Last Word On Nothing
Whether it’s through science fiction novels, engaging literary nonfiction, or comics, educators are finding creative ways to bring literacy into STEM learning. These approaches echo... The post Stories That Stick: Ideas for Integrating Science and Language Arts appeared first on Vernier.| Vernier
0:00:00.5: Hello everyone. Welcome to the Mindscape Podcast. I'm your host, Sean Carroll. In the last AMA, the last Ask Me Anything episode, we touched on an issue that has talked about a lot in the set of online discourse involving people who care about physics and people who care about science, which is the rate of progress in physics. Are we making progress as fast as we should or in science more generally? Personally, I think that in science more generally, or even in physics, outside fun...| Sean Carroll
My training and background as a physicist is largely in the field of so-called classical optics: the study of the wave properties of light. Lately, however, I’ve been planning more investigat…| Skulls in the Stars
Learn how to make quick and easy confetti cannon projects with your students with two simple designs. Compare the results to find the best!| STEAM Powered Family
In this post, I talk about ways in which I have recently improved my puck preparation for espresso.| Coffee ad Astra
I come back to my last experiment and explore whether the difference in gravimetric vs volumetric flow could be due to changing shot TDS.| Coffee ad Astra
What’s the action of a simple harmonic oscillator? And how does this change depending upon the path? Some mates of mine and I worked through this recently. This is my write-up of that calculation.| P.T.C.
The solution of the differential equation describing simple harmonic motion is often presented as-is, or “handed down from above”. Usually, there is no attempt at justifying where the mathematical solution comes from. To me, this wasn’t good enough. Here, I try to provide some intuition for the solution’s form.| P.T.C.
Pots are buried in the walls of medieval churches and monasteries across Europe: in the UK, Sweden, Denmark and Serbia. Why? Are they just a weird form of decoration? Actually, they are there to fix problematic acoustics. The problem First of all, what do we mean by ‘problematic’ acoustics? When sound waves move around a … Continue reading Pots fixing problematic acoustics→| cs4fn
To help make ends meet and help you become a better philosopher, and thus a better citizen and thinker, every season I’ll post three books from my long-standing recommendations list, and review and discuss their value. And here’s how you can help: I am an Amazon Associate. So if you click through the sales link […] The post My Monthly Recommendation: Understanding Physicalism as a Philosophy appeared first on Richard Carrier Blogs.| Richard Carrier Blogs
Christopher Hitchens rightly said the argument from fine tuning is the best argument theists have, but only because it requires thought to figure out why it’s bullshit (whereas most Christian apologetics is obvious bullshit from the first moment you hear it). Because it is actually a really bad argument. Here I will explain this and […] The post The Utter Destruction of the Fine Tuning Argument appeared first on Richard Carrier Blogs.| Richard Carrier Blogs
Magnet science is fun for young kids with this yes or no magnet activity! Use everyday items to test out what's magnetic and what's not.| Little Bins for Little Hands
0:00:00.4 Sean Carroll: Hello, everyone, and welcome to the Mindscape podcast. I'm your host, Sean Carroll. Podcasting, like the subject of today's episode, is a complex system. Many things happen. You cannot always know what is going on. Sometimes the schedule kind of gets away from you and you decide that this would be the right time for a solo episode. This is a fancy way of saying that I'm behind on actually recording episodes because of various things that happened. So why not just do it...| Sean Carroll
Images from the most powerful astronomical discovery machine ever created, and built in California A breathtaking zoomed-in glimpse of the cosmos: this first image from the Vera C. Rubin Observator…| California Curated
How to think like a classical statistical-mechanic, with many examples from gas theory, biology, probability, and information theory. Prerequisites: thermodynamics, calculus, probability, and mathematical maturity.| Yuxi on the Wired - Essays
The hole argument in general relativity is formally analogous to the inverted qualia problem in philosophy. Like how spacetime points have no existence beyond gauge freedom, qualias have no existence beyond their geometric-functional roles, thus dissolving the hard problem of consciousness.| Yuxi on the Wired - Essays
How to think like a classical thermodynamic-economist, delivered with many illustrations and some sci-fi metaphors. Particular emphasis on what traditional pedagogy gets wrong. Prerequisites: multivariate calculus and mathematical maturity.| Yuxi on the Wired - Essays
What every graduate student should know about analytical mechanics, delivered with economic style and many illustrations. Particular focus on particle-wave duality and old quantum theory. Prerequisites: multivariate calculus and mathematical maturity.| Yuxi on the Wired - Essays
Survival guide for renormalization (RN) theory. How to do it in real space and frequency space. What it all means. Should have something for everyone, from mathematicians to physicists to outsiders, from serious series to pretty pictures. Intended audience: those with two years of undergrad mathematics.| Yuxi on the Wired - Essays
An alternative form for the solution of a simple harmonic oscillator caused some short-lived confusion and consternation. Resolving the conflict turned out to be fairly straightforward.| P.T.C.
Radio waves are low-frequency electromagnetic waves used in communication, radar, and astronomy. Discover their sources, uses, and effects.| Science Notes and Projects
By Kate Rich The eScience Staff Spotlight is a series featuring individual members of our team and their career journey. This week’s featured staff member is Bryna Hazelton, our Director of Research Programs and Senior Research Scientist. Given her upbringing, some might find it unsurprising that Bryna developed a passion for research. She grew up […]| eScience Institute
Middle school is a great time to give students more experience collecting and working with data. Whether they’re testing chemical reactions, tracking environmental changes, or... The post Four 3D-Aligned Experiments for Your Middle School Classroom appeared first on Vernier.| Vernier
At first glance at the title you might assume that this book is another Oppenheimer biography - and of course he features - but it's far mor...| popsciencebooks.blogspot.com
Early 2025 has already played host to some spectacular astronomical events, and there are more to come. In March, look to the moon to watch it change color.| Sciencing: Daily content for curious minds
While our solar system is a fascinating place on its own, exoplanets are even more of a mystery. And one exoplanet in particular is something quite new.| Sciencing: Daily content for curious minds
It's long seemed like Stonehenge harbors many secrets, and it's not keen on giving them up. But a rare lunar event might finally give us some answers.| Sciencing: Daily content for curious minds
Usually, it's pretty obvious when something is a solid or a liquid. But this substance moves so slowly that it an experiment had to prove it was a liquid.| Sciencing
CERN has developed a portable container that can transport antimatter by truck between laboratories. The test showed that protons could be transported 4 kilometers without a single particle disappearing during transport.| Warp News
NASA’s EMIT instrument successfully performed analysis detecting wastewater leaks on Earth from aboard the International Space Station.| The Debrief
From studying the vastness of galaxies to the tiniest molecules on Earth, four alumni have been awarded 2025 National Science Foundation (NSF) Graduate Research Fellowships to help further the understanding of the cosmos and discover cures for diseases. Two of the recipients — Varun Gunda BS’25 and Zachary Lee BS’25 — worked in Dr. Shalini […]| News Center
What about objects? If we want to argue that they have consciousness too, we need to define the term differently from the experiential way we usually do.| Evolution News and Science Today
It’s always hard to define life. Everyone has their favorite definition – some describe it as a struggle against entropy, while others describe it as an emergent property of chemicals. Countless books have been written on the topic, yet we’re far from a consensus. Against the backdrop of the second law of thermodynamics, life seems… Read More| Inverted Passion
Countless videos thumbnailed with equations cover the YouTube channel of El Camino College physics professor Michel van Biezen, 68. Van Biezen might appear to be an ordinary teacher, but beneath the surface lies a passion for education that manifests in multiple forms. Every video on his channel, which has 1.12 million subscribers, begins as van...| El Camino College The Union
Poisson’s ratio measures a material’s deformation when stretched or compressed. It quantifies how much it shrinks or expands in directions perpendicular to an applied normal force. For example, when a rubber band is pulled, it not only gets longer but also becomes slightly thinner. Therefore, in addition to longitudinal elongation, it also experiences lateral contraction. […] The post Poisson’s Ratio appeared first on Science Facts.| Science Facts
Stress is defined as the force applied to a material divided by the area over which the force is distributed. When this force acts perpendicular to the surface, it is termed normal force. It can be further classified into tensile (pulling) or compressive (pushing) forces. Tensile stress is the tensile force acting per unit area […] The post Tensile Stress appeared first on Science Facts.| Science Facts
What is the Work-Energy Theorem. Check out a few examples, along with solved problems.| Science Facts
NASA’s Parker Solar Probe detected a powerful magnetic explosion providing new data on magnetic reconnection, important to space weather.| The Debrief
Whether you want to pursue a physics career, develop problem-solving skills, or deepen your understanding of the world around us, studying physics opens up a world of possibilities.| National Extension College
School year in review, special congratulations to the Class of 2025, and spotlight on outstanding members of the College| College of Sciences
Figure 1 There is lots of fractal-like behaviour in NNs. Not all the senses in which fractal-like-behaviour is used are the same; Figure 2 finds fractals in a transformer residual stream for example, but there are fractal loss landscapes, fractal optimiser paths… I bet some of these things connect pretty well. Let‘s find out. 1 Fractal loss landscapes More loss landscape management here [Andreeva et al. (2024); Hennick and Baerdemacker (2025); ]. Estimation theory for fractal qualities ...| The Dan MacKinlay stable of variably-well-consider’d enterprises
I am pleased to announce that my first STEAM book, WHIRLIGIGS: THE WONDROUS WINDMILLS OF VOLLIS SIMPSON’S IMAGINATION, was selected by the National Science Teachers Association as a best book of the year and by the Children’s Literature Assembly as a 2025 Notable Book in the Language Arts. Profiling North Carolina folk artist Vollis Simpson, […]| children's books by the weatherfords
image: iStock We were driving to the graveyard earlier in the year on what would have been my Dad’s birthday, except that he’d passed away a year earlier| David R Hamilton PHD
It's with a heavy heart that I have to say that I could not get on with this book. The structure is all over the place, while the content ve...| popsciencebooks.blogspot.com
