Self-Motivation
David Goggins
Former Navy Seal
Career Development
Bryan Cranston
Actor
Critical Thinking
Liv Boeree
International Poker Champion
Emotional Intelligence
Amaryllis Fox
Former CIA Clandestine Operative
Management
Chris Hadfield
Retired Canadian Astronaut & Author
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Century-old vaccine may lower coronavirus deaths, finds new study

A new study suggests that an old tuberculosis vaccine may reduce the severity of coronavirus cases.

Credit: Kekyalyaynen / Shutterstock
  • A new study finds a tuberculosis BCG vaccination is linked to its COVID-19 mortality rate.
  • More BCG vaccinations are connected to fewer severe coronavirus cases in East Germany.
  • The study is preliminary and more research is needed to support the findings.
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The biology of aliens: How much do we know?

Hollywood has created an idea of aliens that doesn't match the science.

  • Ask someone what they think aliens look like and you'll probably get a description heavily informed by films and pop culture. The existence of life beyond our planet has yet to be confirmed, but there are clues as to the biology of extraterrestrials in science.
  • "Don't give them claws," says biologist E.O. Wilson. "Claws are for carnivores and you've got to be an omnivore to be an E.T. There just isn't enough energy available in the next trophic level down to maintain big populations and stable populations that can evolve civilization."
  • In this compilation, Wilson, theoretical physicist Michio Kaku, Bill Nye, and evolutionary biologist Jonathan B. Losos explain why aliens don't look like us and why Hollywood depictions are mostly inaccurate.
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How DNA revealed the woolly mammoth's fate – and what it teaches us today

Scientists uncovered the secrets of what drove some of the world's last remaining woolly mammoths to extinction.

Ethan Miller/Getty Images

Every summer, children on the Alaskan island of St Paul cool down in Lake Hill, a crater lake in an extinct volcano – unaware of the mysteries that lie beneath.

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Creativity: The science behind the madness

Human brains evolved for creativity. We just have to learn how to access it.

  • An all-star cast of Big Thinkers—actors Rainn Wilson and Ethan Hawke; composer Anthony Brandt; neuroscientists David Eagleman, Wendy Suzuki, and Beau Lotto; and psychologist Scott Barry Kaufman—share how they define creativity and explain how our brains uniquely evolved for the phenomenon.
  • According to Eagleman, during evolution there was an increase in space between our brain's input and output that allows information more time to percolate. We also grew a larger prefrontal cortex which "allows us to simulate what ifs, to separate ourselves from our location in space and time and think about possibilities."
  • Scott Barry Kaufman details 3 brain networks involved in creative thinking, and Wendy Suzuki busts the famous left-brain, right-brain myth.

Could you become a 'natural' blonde by altering your genes?

Exploring how a small change in your DNA sequence can make you a natural blonde.

A few weeks after preparing them, Dr Catherine Guenther checked her mouse embryos and knew that she had identified the source of a blond-haired mutation in human DNA.

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