常速英语

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Coral reefs are one of the most spectacular ecosystems found in nature. Hosts to numerous biological communities, they are important havens of biodiversity. And a valuable food source ...

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Are we the only living things in the entire universe? The observable universe is about 90 billion light-years in diameter. There are at least 100 billion galaxies each with 100 to 1000 billion stars. ...

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A smooth stone is given an edge and the course of life on Earth has changed forever. This was the first step on the journey to our technological present. [MUSIC PLAYING] Though too...

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MOTT GREENE: Hardly anyone in the early 20th century said, why are there oceans, and why are there continents? Wegener is a wonderful example of how science benefits from people coming fro...

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In California the August complex fire has become the largest fire in state history. The creek fire in central California has burned at least 46 000 acres. 2020 was a terrible year for wildfires in ...

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The idea is to sequence the DNA from a patient with cancer, sequence the tumor DNA, as well as the nontumor DNA, to identify all the mutations that are just found in the tumor DNA and not...

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In 2013 we recovered two pieces of a glassy like substance. Somehow at around 9 000 years ago obsidian traveled 4 000 kilometers from the pacific northwest to the middle of what is now the lake huron ...

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MELISSA LEEBAERT: Yellowstone National Park, founded in 1872. It's considered to be the first national park in the world. SEAN CARROLL: There's really important lessons from Yellowstone, g...