What are the origins of life? How did things go from non-living to living? From something that could not reproduce to something that could? Earth is estimated to be about 4.5 billion years old, and for much of that history it has been home to life in one form or another. Our planet is teaming with life, from the highest mountain to the deepest ocean; life is everywhere. But what was the firing pistol that started the evolutionary race? How did material go from non-living to alive? It's one of the most fundamental and difficult questions that has challenged us since the beginning of time.
How do you know you’re real? Is existence all just a big dream? Has some mad scientist duped us into simply believing that we exist? James Zucker investigates all of these questions (and more) in this mind-boggling tribute to René Descartes’s "Meditations on First Philosophy."
In this episode of NOVA scienceNOW, journey back in time to the birth of our solar system to examine whether the key to our planet's existence might have been the explosive shockwave of an ancient supernova. Meet a chemist who has yielded a new kind of "recipe" for natural processes to assemble and create the building blocks of life. And see how the head louse, a creepy critter that's been sucking our blood for millions of years, is offering clues about our evolution. Finally, meet neuroscientist André Fenton, who is looking into erasing painful memories with an injection.
Drinking alcohol on a cold day warms you up. Eating grilled meat can increase your risk of cancer. Mosquitoes prefer blondes… ah, women. We've all heard the claims, but are they true? From Winnipeg to Florida, from New York City to Vancouver, B.C, molecular biologist Dr. Jennifer Gardy goes in search of the answers. It's a journey through seldom-seen research that forces Dr. Gardy to become a real-life guinea pig to test these claims and discover, once and for all, whether they're science fact or science fiction. The surprising results are revealed in Myth or Science. , results that could change your life. Most of us just accept these myths as fact. But it is surprising to discover which are true and which aren't. It's not what you expect. And the answers can make a major difference to your daily life, and your health.