常速英语

Keywords:

Earth’s temperature is affected by a process called the greenhouse effect, which is how the atmosphere keeps our planet’s surface warm. This process begins with energy from the sun, which is m...

Keywords:

GMOs are one of the most controversial areas of science. Genetic engineering is used in many fields, but even though medical applications like GM insulin are widely accepted, The debate heats up...

Keywords:

[SCHRAG:] OK. But that still doesn't really answer our question. It doesn't really explain how did Venus this get this way, why is Mars this way, and why has the Earth persisted in this...

Keywords:

Gravity seems very familiar. After all, it's what makes stuff fall, it's what keeps the planets in their orbits, but thinking about the fundamental physics of gravity has led scientists to ques...

Keywords:

SEAN CARROLL: For life to survive, it must adapt and re-adapt to an ever-changing Earth. New traits and capabilities must be invented, while some traits may be lost. [SNAKE HISSING] ...

Keywords:

Andrew Robinson: This is the most valuable metal on the planet. More valuable than silver, gold, platinum, or even this jewelry. It’s this powder right here. This jewelry is being treated with a th...

Keywords:

SPENCER WELLS: Only a small number of human beings live like this today. But from the time our species evolved some 200,000 years ago until the not-too-distant past, all of us lived as ...

Keywords:

Black holes are the most powerful things in the universe, strong enough to rip whole stars into atom sized pieces Well, this is scary enough. They have an even more powerful and dark property: they...