常速英语

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The Earth sits comfortably in its orbit tilted on its axis at 23 degrees. Knock the planet over - and it wouldn't be the Earth as you know it. This is WHAT IF, and here's what would hap...

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What would happen if you flew into a wormhole? Would you ever hear back? Where would you end up? Back in time? Another galaxy? This is 'What If,' and here's what would happen if a wormhole formed ...

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Do your past, present and future all exist right now? Are you watching this video, being born and lying on your deathbed at this very moment? Surprisingly, the answer could be yes. But h...

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- [Narrator] The idea of robots taking human jobs might bring to mind a scene like this. But it's not hardware that has white collar workers concerned. It's rapidly advancing software, ...

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What if we could engineer a gigantic megastructure capable of harvesting every bit of the Sun's energy? Something known as a Dyson sphere. This is WHAT IF, and here's what would happen ...

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- [Narrator] This video is taken near the eye of a category four hurricane in the middle of the Atlantic with waves as high as a four-story building and winds reaching 94 miles an hour. ...

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A three story building is about 10 meters tall, six times bigger than you. In the opposite direction, six times smaller than you, you get things like a cute squirrel about 27 centimetres...

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Food for thought? Pills! Three times a day, all your nutrients, all your favorite flavors. Feel like having lobster for breakfast? Done. Trying to like mushrooms, but you can’t stand ...