On the front lines of the hunt for killer viruses, a shocking discovery is made: viruses, once thought to be a menace to humankind, may in fact be the ultimate creators. Since the beginning of time, they have played a critical role in evolution, shaping us and perhaps even creating us. How could that be? How can an entity seemingly programmed for destruction lead to genetic diversity and new species? To many people, viruses are simply agents for disease, but to Dr. Luis Villarreal, Director of the Center for Virus Research at the University of California Irvine, they may possess far greater power than originally thought. He guides us through evidence that viruses gave rise to the first complex cells, played a role in the diversification of life, changed how our young are born, drove evolution, and perhaps gave us emotions. One expert even suggests that an ancient virus could have entered our genes and rewired us for monogamy. National Geographic investigates a provocative new theory that suggests that all life - including humans - is descended from viruses. Taking us through African jungles in search for new strains, this episode of Explorer presents a startling new view of viruses - toward what may be a remarkable evolutionary moment: the rise of a new human species.
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Learn about the surprisingly recent invention of medicine that combats illness directly, such as antibiotics. From the accidental discovery of penicillin to today's hunt for antivirals, this history underpins work to find COVID-19 treatments.
S1E2 • Extra Life: A Short History of Living Longer • 2021 • Health
SciShow debunks the myth that you only use 10 percent of your brain. So, how much do you really use? And how do we know?
We’re still only at the dawn of learning how to use drugs properly – knowing what drugs we need and when we should take them. We look forward to a brighter future for drug use.
The School of Life • 2016 • Health
Every second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival. Without it you would die in no time. This sounds simple but the reality is complex, beautiful and just awesome. An animation of the immune system.
In a Nutshell • 2014 • Health
Amidst radical changes in nicotine use globally, one filmmaker's journey through the confusion & fear leads to a startling discovery about Earth's most hated stimulant. Society may be changed forever.
2020 • Health