One-third of all slavery is visible from space

Advances in satellite imagery are shining a light.

Boyd et al., 2018
  • Today, there are 40.3 million slaves on the planet, more than the number of people living in Canada.
  • Slavery can be hard to find, but it commonly occurs in several key industries like fishing and mining.
  • Using satellite data, researchers and activists are using crowdsourcing and artificial intelligence to identify sites where slavery is taking place.
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Top 5 anarchist plots in American history

Throughout history, anarchists have been responsible for bombings and assassinations, including some very recent ones.

Flickr user Adam Cohn
  • Anarchism isn't always violent, but there's a reason why that stereotype has stuck.
  • Throughout history, anarchists have tried to bomb and assassinate different targets – including Barack Obama.
  • Here are 5 notable anarchist plots, ranging from centuries-old bombings to modern-day assassination attempts.
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What are 'black bloc' anarchists?

The controversial protest tactic has a checkered history.

AMY OSBORNE/AFP/Getty Images
  • "Black blocs" are a common sight in protests.
  • The black-garbed and masked protesters often commit acts of violence and vandalism, and the tactic is most commonly associated with anarchists.
  • Learning about the history of the tactic and how its used can help you navigate and understand modern protest movements.
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Researchers fear 400 scientific studies used organs illegally harvested from Chinese prisoners

If a scientific study was conducted unethically, should publishers retract it?

Up to three hundred supporters of the practice of Falun Dafa march through the city center of Vienna, Austria on October 1, 2018 to protest against the importing of human organs from China to Austria. (Photo by JOE KLAMAR/AFP/Getty Images)
  • A new study suggests hundreds of published scientific papers involving organ transplants in China violated ethical standards.
  • International professional standards say studies involving organ transplants shouldn't be published if the organs came from executed prisoners, or donors don't provide consent.
  • China has long been accused of facilitating a shady network of organ harvesting and trafficking, though it's been difficult to prove.
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Pope Francis demotes 2 cardinals named in sexual abuse cases

One cardinal is accused of covering up sexual abuse. The other faces criminal charges in Australia.

Cardinal George Pell walks to a car in Melbourne on December 11, 2018. - Pell is facing prosecution for historical child sexual offences. (Photo by William WEST / AFP) (Photo credit should read WILLIAM WEST/AFP/Getty Images)
  • The cardinals have been removed from the pope's C-9 cabinet, an informal group designed to help restructure the bureaucracy of the Vatican.
  • The cardinals have not been removed from the church.
  • In February, the Vatican will host a conference to inform church leaders about the impacts of sexual abuse.
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