Tiny robots may offer a big promise.Glioblastoma is the deadliest type of brain cancer, with a median survival of 14.6 months after diagnosis. Because these tumours are found deep inside the brain and surrounded by areas that control vital functions like breathing, they remain extremely difficult to treat and may return even after surgery. A team of Queen’s researchers is exploring a new way to approach this disease—using a robot no bigger than a bubble.“Brain tumours are very hard to t...