The Edge of Physics: Anil Ananthaswamy

In recent years, physics theory has gotten way ahead of the evidence. Now, researchers are going to extremes to figure out what's true and what isn't. They've launched a set of hugely ambitious experiments in some of the most forbidding places on Earth, from the South Pole to Himalayan mountaintops. Physics writer Anil Ananthaswamy travelled to these remote laboratories, and he tells us what he saw.