Reviving Old Memories

A group of neuroscientsts say they have isolated a single enzyme in the brain that can help long-term memories remain crisp in your mind. The isolated enzyme is called PKMzeta.

Enzyme PKMzeta can aid in reviving old memories and keeping them fresh in your mind: "Boosting levels of PKMzeta helped rats recall, in great detail, events they had experienced many days beforehand. Lowering levels of the enzyme caused the rats to forget old memories more quickly. What's remarkable about this discovery is that the enzyme can help the animals recall these old memories even if they weren't boosting their levels of PKMzeta at the time the memories were formed. If the same treatment works for humans, we could be looking at a way to deal with age-related memory loss. And a way to help us recall information we once knew intimately, but which has grown cloudy as the years have passed."

'Upstreamism': Your zip code affects your health as much as genetics

Upstreamism advocate Rishi Manchanda calls us to understand health not as a "personal responsibility" but a "common good."

Sponsored by Northwell Health
  • Upstreamism tasks health care professionals to combat unhealthy social and cultural influences that exist outside — or upstream — of medical facilities.
  • Patients from low-income neighborhoods are most at risk of negative health impacts.
  • Thankfully, health care professionals are not alone. Upstreamism is increasingly part of our cultural consciousness.
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Afghanistan is the most depressed country on earth

No, depression is not just a type of 'affluenza' – poor people in conflict zones are more likely candidates

Image: Our World in Data / CC BY
Strange Maps
  • Often seen as typical of rich societies, depression is actually more prevalent in poor, conflict-ridden countries
  • More than one in five Afghans is clinically depressed – a sad world record
  • But are North Koreans really the world's 'fourth least depressed' people?
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Banned books: 10 of the most-challenged books in America

America isn't immune to attempts to remove books from libraries and schools, here are ten frequent targets and why you ought to go check them out.

Nazis burn books on a huge bonfire of 'anti-German' literature in the Opernplatz, Berlin. (Photo by Keystone/Getty Images)
Culture & Religion
  • Even in America, books are frequently challenged and removed from schools and public libraries.
  • Every year, the American Library Association puts on Banned Books Week to draw attention to this fact.
  • Some of the books they include on their list of most frequently challenged are some of the greatest, most beloved, and entertaining books there are.
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Videos
  • Oumuamua, a quarter-mile long asteroid tumbling through space, is Hawaiian for "scout", or "the first of many".
  • It was given this name because it came from another solar system.
  • Some claimed 'Oumuamua was an alien technology, but there's no actual evidence for that.