Manhunt: Boston Bombers
The search for the perpetrators of the Boston bombings.
Oklahoma's Deadliest Tornadoes
Examining the May 20, 2013, tornado strike in Oklahoma.
Hunt for the Supertwister
"Hunt for the Supertwister."
Secrets of the Sun
Examining the sun, which is 27 million degrees Fahrenheit.
Scientists examine evidence about Neanderthals that sheds light on the hominids, who died off some 30,000 years ago. See the 2010 reconstruction of the Neanderthal genome, which posits that modern humans and Neanderthals interbred.
Venom: Nature's Killer
Hunting down the most venomous animals to reveal their medical mysteries.
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6/20/13 8:00 PM
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Time. We waste it, save it, kill it, make it. The world runs on it. Yet ask physicists what time actually is, and the answer might shock you: They have no idea.
Even more surprising, the deep sense we have of time passing from present to past may be nothing more than an illusion. How can our understanding of something so familiar be so wrong?
In search of answers, Brian Greene takes us on the ultimate time-traveling adventure, hurtling 50 years into the future before stepping into a wormhole to travel back to the past. Along the way, he will reveal a new way of thinking about time in which moments past, present, and future—from the reign of T. rex to the birth of your great-great-grandchildren—exist all at once.
This journey will bring us all the way back to the Big Bang, where physicists think the ultimate secrets of time may be hidden. You'll never look at your wristwatch the same way again.
From The World's Science podcast to Nova, we'll deliver updates from these cutting edge programs. See a sample »