It's called the speed limit of the universe. Einstein blew all of our minds when he worked out the Theory of Relativity, and showed that space and time were malleable substances. He also theorized that we as humans can never travel faster than the speed of light, which leaves the stars and other galaxies almost impossibly out of our reach. But the dreams of Star Wars and Star Trek are not dead. In fact, there could be ways to travel faster than the speed of light - and some of them are already being tested in labs around the world.
Quantum theory, the best explanation of how atoms and anything smaller behave, is so weird even scientists who have mastered it find it baffling. But bit by bit scientists are finding maybe it's not so weird as comparable behavior is discovered in our every day world. It's just that no one noticed before.
Our minds store our entire lives, our memories and our deepest desires. Tell no one, and our thoughts remain our own. But our brains are biological computers. Computer hackers can tamper with our email. Could brain hackers someday be able to rewrite our thoughts?
Death is life's greatest certainty. But that may be about to change. Scientists have discovered an immortal animal that may hold the secret of endless regeneration. They're on the brink of editing our DNA so that we can cure death like a disease. Or is dying necessary for the survival of our species?
2017 • Science
Every 17 minutes in America, someone is killed with a gun. Politicians can't seem to stop the violence. But epidemiologists, psychologists and big data crunchers are discovering that gun crime spreads like a virus -and science may be able to stop its spread.
2017 • Science
In Taiji, Japan, local fishermen hide a gruesome secret: the capture and slaughter of dolphins. Activist Ric O'Barry, who trained dolphins for the "Flipper" TV series, joins forces with filmmaker Louis Psihoyos and the Ocean Preservation Society to expose the brutal practice, risking life and limb in the process.
2009 • Nature
On an island in the world's largest freshwater lake, a single, isolated population of moose battle for survival against a pack of wolves. Find out how this delicate ecosystem in the midst of Lake Superior reveals invaluable scientific information on the dynamics of predator-prey relationships.
Peregrine falcons are slowly rebounding from the edge of extinction, while snapping turtles face different life-threatening challenges. Learn about conservation efforts in Ontario, Canada to help give these threatened species a boost while they fight back.
The Nsefu lion pride of Zambia are in an enviable position, with a litter of new cubs, control of the best territory on the Luangwa River, and strong males to protect them. But as the cubs grow older, pressure mounts as they begin to understand their roles and how every misstep can threaten the very existence of their family.