Is World History Becoming More Peaceful or More Violent?

If you want to understand trends in the history of global violence, look to data, not headlines, says Harvard psychology professor and linguist Steven Pinker.

Videos
  • As a stand-up comedian, Pete Holmes knows how words can manipulate audiences — for good and bad.
  • Words aren't just words. They stich together our social fabric, helping establish and maintain relationships.
  • Holmes has a clever linguistic exercise meant to bring you closer to the people around you.




Scientists create a "lifelike" material that has metabolism and can self-reproduce

An innovation may lead to lifelike evolving machines.

Shogo Hamada/Cornell University
Surprising Science
  • Scientists at Cornell University devise a material with 3 key traits of life.
  • The goal for the researchers is not to create life but lifelike machines.
  • The researchers were able to program metabolism into the material's DNA.
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