Colosseum: Roman Death Trap Preview

Extras

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  How the West Is Making It Rain, With Science

  A method of boosting snow and rainfall may help ease drought conditions in the western US.

  6:22
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  There’s Something Living in Wildfire Smoke

  Wildfire smoke can carry harmful microorganisms long distances.

  1:59
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  How Extreme Heat Overwhelms the Human Body

  When it comes to extreme weather, heat can be a “silent killer.”

  1:26
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  Chasing Carbon Zero Sneak Peek

  A new film from NOVA examines technologies that could get us to carbon zero by 2050.

  1:00
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  Soothing Science: The Light You See at Sunset

  Relax to the sound of the ocean and discover the science behind sunsets.

  8:01
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  Saving the Right Whale Preview

  Follow scientists determined to save the critically endangered right whale.

  0:27
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  Chasing Carbon Zero Preview

  Here’s how the U.S. could reach net-zero carbon emissions by 2050.

  0:29
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  Ancient Pyramids Uncovered in the Amazon

  This discovery rewrites the history of complex societies on the continent.

  3:56
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  Manhattan Schist

  All over the city you can see outcrops of bedrock. It’s called Manhattan schist.

  1:13
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  Dolphin Mirror

  Research suggests that dolphins can recognize themselves in the mirror.

  3:18