Brazilian scientists produce mini-brains with eyes

Using a new process, a mini-brain develops retinal cells.

  • Mini-brains, or "neural organoids," are at the cutting edge of medical research.
  • This is the first one that's started developing eyes.
  • Stem cells are key to the growing of organoids of various body parts.
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Leonardo da Vinci could visually flip between dimensions, neuroscientist claims

A neuroscientist argues that Da Vicni shared a disorder with Picasso and Rembrandt.

Christopher Tyler
  • A neuroscientist at the City University of London proposes that Leonardo da Vinci may have had exotropia, allowing him to see the world with impaired depth perception.
  • If true, it means that Da Vinci would have been able to see the images he wanted to paint as they would have appeared on a flat surface.
  • The finding reminds us that sometimes looking at the world in a different way can have fantastic results.
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Taking care of your hearing and vision slows cognitive decline by 50-75%

A joint study from U.S. and U.K. universities shows promising results in reducing the rate of cognitive decline.

Pexels/Big Think
  • Decline in hearing and vision can add to overall mental decline.
  • Hearing aids can slow cognitive decline by 75 percent.
  • Similarly, cataract surgery can help cognitive decline by 50 percent.
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You're Not Fast Enough to Swat a Fly—Here's Why

Flies are in no way smart, but they experience time in an almost Matrix-like way. 

Still from AMC's "Breaking Bad"

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America's 10 most popular conspiracy theories

America's most popular conspiracy theories and the science behind them.

Phil Wolf, owner of Wolf Automotive used car dealership, paid $2,500 to install this "birther" billboard. (Photo by John Moore/Getty Images)

Why do people believe in conspiracy theories?

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