Biology & Chemistry
How do we grow crops quickly enough to feed the Earth’s billions? It’s called the Haber process, which turns the nitrogen in the air into ammonia, easily converted in soil to the nitrate plants need to survive. Though it has increased food supply worldwide, the Haber process has also taken an unforeseen toll on the environment. Daniel D. Dulek delves into the chemistry and consequences.
In the US, women live 5 to 10 years longer than men. Are men doing something wrong, or are women really the superior sex? Laci explains this life expectancy discrepancy.
No matter how you think of it, your skin is very important. It covers and protects everything inside your body. In humans, it is the largest organ of the integumentary system.
Ever wondered how honey is made? Here’s a really good explanation!
Kids are able to heal from injuries so much faster than adults thanks in part to one particular protein. As Anthony shows us, scientists are showing remarkable progress in harnessing that protein into a powerful drug enabling the body to regrow lost tissue.
The mechanisms of evolution explained in one video.
According to some scientists, we must begin using more nuclear power in order to prevent global warming from accelerating. But that creates a huge nuclear waste problem. But scientists at the University of Sheffield think they might have found a very unique way of handing it that could make nuclear waste a problem of the past.
Ever wondered what happens to your body if you don’t get enough water? Our bodies are mostly water by weight, so in today’s episode of SciShow Hank explains what happens to your body as it starts to shut down when you go without that tasty H2O.
Turns out living animals aren’t the only ones with internal clocks. Plants also have them and they’re driven by sugar!
Contagious yawning can be annoying, but it might also be a sign of good social skills. It’s a type of emotional contagion, a phenomenon in which we tend to share the feelings of people around us. Scientific American MIND editor Sandra Upson explains.
The Mpemba effect is the theory that warmer water can freeze faster than colder water. Scientists have known the phenomenon since the time of Aristotle in Ancient Greece, but until now they have struggled to explain why.
Chemistry raised to the power of AWESOME! That’s what Hank is talking about today with Electrochemistry. Contained within, Hank discusses electrochemical reactions, half reactions, how batteries work, galvanic cells, voltage, standard reduction potential, cell potential, electrolysis, and electro plating and the things that go into making it possible for you to watch this episode of Crash Course Chemistry!
To some people, stress describes the frantic pace of everyday life. To others, stress is what you feel during times of conflict, loss or illness. People also react differently to stress. Some take it in stride and seem to thrive on it, while others buckle under relatively mild pressure.
Meditation can sharpen attention, strengthen memory and improve other mental abilities. Scientific American editor Ferris Jabr examines the changes in brain structure behind some of these benefits.