Is it possible that overfishing, super germs, and global warming are all caused by the same thing? In 1968, a man named Garrett Hardin sat down to write an essay about overpopulation. Within it, he discovered a pattern of human behavior...

On July 26, 1943, Los Angeles was blanketed by a thick gas that stung people’s eyes and blocked out the Sun. Panicked residents believed their city had been attacked using chemical warfare. But the cloud wasn’t an act of war. It was...

Learn the basics about quarrying, its economic advantages and disadvantages concerning environment and healthy living. What is quarrying? and how does it affect us and our environment? Find out more in this video!

Evolution “is the net change in organisms or a population over the span of many generations.” This change in organisms or populations happens through DNA mutations and reconbination and is passed down to the next generation through...

Evolution is the net change in organisms or a population over the span of many generations. This change in organisms or populations happens through DNA mutations and reconbination and is passed down to the next generation through...

This instructive video describes what makes science different from other disciplines, while highlighting many exciting science career opportunities. Concepts and terminology: observing, solving problems, health, career, education, and...

Learn the basics about carbon neutral and biofuels, as a part of environmental chemistry. Coal, oil, natural gas, shale gas and gas from fracking are fossil fuels formed hundreds of millions of years ago from living things that got...

The shape of a farm can tell you a surprising amount about the land it's on and the people that use it.

This video discusses the problem of environmental pollution and its three aspects: the introduction of contaminants, the extent to which they are present, and their harm to living beings and the environment. It also covers different...

Human beings are everywhere. With settlements on every continent, we can be found in the most isolated corners of Earth's jungles, oceans and tundras. Our impact is so profound, most scientists believe humanity has left a permanent mark...

Our planet's diverse, thriving ecosystems may seem like permanent fixtures, but they're actually vulnerable to collapse. Jungles can become deserts, and reefs can become lifeless rocks. What makes one ecosystem strong and another weak in...

We actually have no idea what a “disease” is.

A world without predators. It sounds like a safer, happier world, but come on, this is science…

Photosynthesis plays a huge role in regulating the earth's CO2. But what happens when the temperature gets high enough that photosynthesis slows down?

Photosynthesis plays a huge role in regulating the earth's CO2. But what happens when the temperature gets high enough that photosynthesis slows down?

Volcanoes might seem like an unstoppable force of nature - but there is at least one OTHER force on Earth that seems to be able to keep them down.

Life on Earth has weathered boiling-hot oceans and volcanic-ash-darkened skies—but that’s nothing like the climate change we’re experiencing now. In this episode of Crash Course Biology, we’ll talk about the greenhouse effect, learn why...

We mostly think of DNA as something we find inside the cells of living things, but actually it’s all around us. It’s in the ground, in the water and even in the air! What’s it doing there? How can we study it? What can we learn from it?...

Consider the classic white t-shirt. Annually, we sell and buy 2 billion t-shirts globally, making it one of the most common garments in the world. But how and where is the average t-shirt made, and what's its environmental impact? Angel...

To human eyes, the world at night is a formless canvas of grey. Many nocturnal animals, on the other hand, experience a rich and varied world, bursting with details, shapes, and colors. What is it, then, that separates moths from men?...

Introduction to this gradient vector. What is meant by 'steepness of a path' on a hillside? (Part 1 of 3) Playlist link -f='http://wwlink -ube.com/playlist?list=PLB4CDD2976B5FE747' target='_blank' rel='nofollUniversity Transcript