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The fishing industry has long been hard to monitor. Its global footprint is difficult even to visualize. Much fishing takes place unobserved, far from land, and once the boats move on, they leave behind few visible traces of their activity.

SpaceX successfully launched its Falcon 9 rocket Thursday morning.

But the hard part came next: trying to catch the rocket's falling nose cone with a big net on a ship in the ocean.

Wait, what?

A Mongolian horse that has long been hailed as the last truly wild horse species in existence isn't really all that wild.

It turns out that Przewalski's horses are actually feral descendants of the first horses that humans are known to have domesticated, around 5,500 years ago.

What's more, the modern horses that people ride today cannot be traced to those early steeds. That means humans must have tamed wild horses once again later on, somewhere else, but no one knows where or when.

When humans talk to each other or walk alongside each other, we tend to match each other's subtle movements.

Called interpersonal movement synchrony in the science literature and mirroring in the popular media, it's an often-unconscious process during which we match our gestures and pace to that of our social partner of the moment.

A quarter of a million Americans die every year from sepsis, which is the body's reaction to overwhelming infection. This cascade of organ failure can be nipped in the bud if health care workers know it's ramping up, but that's often not easy to do.

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