Hannah joined us in 2017. She became Deputy Editor and Science Outreach Lead at Our World in Data in 2023. She was previously Head of Research.She focuses on the long-term changes in the environment – energy, pollution, agriculture, food supply – and their compatibility with global development. Hannah completed her Ph.D. in GeoSciences at the University of Edinburgh.She is a researcher at the Oxford Martin Programme in Global Development, and an honorary fellow at the University of Edinbu...| Our World in Data
All the visualizations, data, and articles produced by Our World in Data are free for you to take and use — no permission required. You just need to provide credit to Our World in Data. This part of our work is licensed under a very permissive ‘Creative Commons’ (CC) license: the CC-BY license (the BY stands for ‘by attribution’).| Our World in Data
Human emissions of greenhouse gases are the primary driver of climate change. The world needs to decarbonize to reduce them.| Our World in Data
Limiting warming to 1.5°C above pre-industrial levels means that the greenhouse gas emissions need to be reduced rapidly in the coming years, about halved by 2030, and brought to zero soon after around mid-century.| climateactiontracker.org
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