How many universes are there? Author Brian Greene explains. Plus: A fracking update, a look at what’s next in Egypt and an interview author Parag Khanna.
Egyptians celebrate the news of the resignation of President Hosni Mubarak, who handed control of the country to the military on Friday.
Three VII photographers take an up-close look at the defiance and anger that has been pouring out into Egypt’s streets since the protests began on January 25.