Quantum Physicist Takes Aim at the Universe's Mysterious Arrow of Time

Filed by Dr. Kai Vega

Scientists and philosophers have argued over the nature of time since … well, since time immemorial. Is time real, or is it a convenient illusion? Why does time seem to flow in just one direction? In a new book called “On Time,” British physicist Jim Al-Khalili lays out what he thinks is the answer to such questions.