Space toilets: How astronauts boldly go where few have gone before

A NASA astronomer explains how astronauts dispose of their, uh, dark matter.

  • When nature calls in micro-gravity, astronauts must answer. Space agencies have developed suction-based toilets – with a camera built in to ensure all the waste is contained before "flushing".
  • Yes, there have been floaters in space. The early days of space exploration were a learning curve!
  • Amazingly, you don't need gravity to digest food. Peristalsis, the process by which your throat and intestines squeeze themselves, actually moves food and water through your digestive system without gravity at all.
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When should we stop trying to save the patient and focus on saving the organs?

A definition of death is surprisingly malleable, leading to complications when it comes to organ donation.

A doctor performing a kidney transplant. (Photo by: BSIP/UIG via Getty Images)
  • The latest Hastings Center Report is dedicated to the question of defining death.
  • Definitions of death are not only biological, but cultural, leading to important questions about organ donation.
  • The brain can continue to be electrically active for five minutes after cardiac death—valuable time for patients in need of transplants.
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It's time to redefine 'masculinity'

The American Psychological Association recently released guidelines for treating boys and men. Men aren't happy about it.

Protesters clash on East 83rd street following an anti-Trump protester (cowering on sidewalk) having spit on a Proud Boy. This picture was made on 10/12/18. (Photo by Sam Costanza for NY Daily News via Getty Images)
  • APA Guidelines for the Psychological Practice of Boys and Men represents the first time the association has published rules specifically for treating white, Western males.
  • Though the guidelines are data-driven and therapeutically sound, a corner of the American Right (and some on the Left) has taken offense.
  • Men still dominate statistics in a number of categories, including suicide rates, substance abuse, and violence.
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Jillian Michael's 6 health keys to conquer aging

6 keys to warding off premature death.

  • Getting older is inevitable. But with diet, exercise, and some insight into how the human body works, you can do your best to keep your body from aging prematurely.
  • Meal timing, combined with 12 hours of fasting, can actually do more for your body than you might realize.
  • Did you know stress can literally alter your DNA? And did you know that biological ways to combat the stress can even be passed down to your kids?
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Want to know what mice in labs are saying? Try DeepSqueak.

A breakthrough app for ultrasonic squeak analysis.

(Kuttlevaserova Stuchelova/Shutterstock)
  • Mice have a vocabulary of about 20 different phrases.
  • A clever new neural-network-based application reveals what mice used in research say.
  • Spoiler: The conversation changes when a female shows up
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