Traction

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189 published items.

Why are ostrich meat red?
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Why are ostrich meat red?

It is no coincidence that ostrich meat is red, which is related to their muscle type.

December 18, 2018
Why eat meat ... delicious?
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Why eat meat ... delicious?

People love eating meat from ... more than 2 million years ago. Katharine Milton, an anthropologist at the University of California at Berkeley, explains: You can't go d…

December 18, 2018
The Earth will have 1 second more on June 30
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The Earth will have 1 second more on June 30

On June 30, 2015, the whole world will experience a minute lasting 61 seconds. The reason for this strange event is to synchronize the time on the atomic clock with the…

December 18, 2018