In which Hank and John Green teach you about life on Earth. They won't be giving advice on how life should be lived, because this is a history series. Instead, they'll teach you about the earliest forms of life on Earth, and some of the...

In which Hank and John Green teach you about life on Earth. They won't be giving advice on how life should be lived, because this is a history series. Instead, they'll teach you about the earliest forms of life on Earth, and some of the...

As the world's climate patterns continue to shift unpredictably, places where drinking water was once abundant may soon find reservoirs dry and groundwater aquifers depleted. In this talk, civil and environmental engineer David Sedlak...

Learn the basics about different types of chemical industries, from agriculture to pharmaceutical to energy, and many other uses. In this video, we consider the environmental impact caused by a range of different types of chemical...

It explains sources of organic compounds and the unique characteristics of carbon atoms, namely tetracovalency, catenation and formation of strong bonds.