Eleven dimensions, parallel universes, and a world made out of strings? It's not science fiction, it's string theory. Bestselling author and physicist Brian Greene offers a tour of this seemingly strange world in "The Elegant Universe," a three-hour Peabody Award-winning miniseries.
Part 1, "Einstein's Dream," introduces string theory and shows how modern physics—composed of two theories that are ferociously incompatible—reached its schizophrenic impasse: One theory, general relativity, successfully describes big things like stars and galaxies, while another, quantum mechanics, is equally successful at explaining small things like atoms and subatomic particles. Albert Einstein, the inventor of general relativity, dreamed of finding a single theory that would embrace all of nature's laws. But in this quest for the so-called unified theory, Einstein came up empty-handed, and the conflict between general relativity and quantum mechanics has stymied all who've followed. That is, until the discovery of string theory.
Joe Landolina: This gel can make you stop bleeding instantly
Forget stitches — there's a better way to close wounds. In this talk, TED Fellow Joe Landolina talks about his invention — a medical gel that can instantly stop traumatic bleeding without the need to apply pressure.
The drone game has changed. That may sound like hyperbole, but that was my first impression when experiencing the DJI Inspire One. This is a unit that anyone could pick up and learn to fly quickly, just as you could with the DJI Phantom. But it offers a ton of powerful new features that were previously only available in units too big, dangerous, and expensive for the average consumer to own.
Watching the Inspire One take off and land is exciting, because it transforms mid-flight, with the legs folding up after takeoff so you can shoot 360 degrees of unobstructed video. The unit also has a ground-facing camera that can track what's below and keep the unit stabilized, even when there is no GPS signal, making it much easier to fly indoors.
