Philip Ball reports.
Tumours have a nasty tendency to migrate from their origin to other organs.
In the heat of the light Research from Finland is threatening to overturn an understanding of how we see colour that has held sway for nearly 50 years, says Christopher Surridge. Physicists have used X-rays to execute precise molecular surgery, cutting one chemical bond between atoms while leaving others intact. The mystery of why the Moon looks larger when it is close to the horizon has at last been solved, reports Philip Ball. This one goes to eleven Some rock concerts are so loud you can feel the air move with the beat. Apparently, high-volume rock music can reach the parts other sounds cannot.