常速英语

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Hi, I'm Lucy. I am a night sky photographer and an eclipse chaser. On April 8th there's going to be a total solar eclipse crossing over North America. The path of totality is going to start s...

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- [Narrator] When people clock into work, economists are watching. Going back to the 1950s, the change in the number of hours people work has been a warning sign. Before almost every r...

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What do saber-toothed tigers, woolly mammoths and the dodo all have in common? They're all extinct. And some theorize humans played a large part in this. What if we could apologize for our wrong...

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(upbeat music) - [Narrator] Land west of Phoenix looked like this in 2002. Now it's covered in buildings. Phoenix, along with Las Vegas, is experiencing a stretch of triple digit tempera...

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In an effort to fight climate change, the Sahara Desert could be going green... literally. Plans are being made to terraform the entire Sahara desert; changing it from a dry, barren land...

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If you could teleport the Earth to any place in the Universe, what would you want to look at in the night sky? The bright explosion of a supernova? A black hole passing over your house?...

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- [Narrator] You might not think copper is worth more than a penny, but in today's global economy, it's actually worth a lot. For electric vehicles, windmill farms, even the power grid i...

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The Earth may not be our home forever. Eventually, we may have to leave. What if instead of finding a potentially habitable exoplanet light-years away, we stayed in our Solar System a...