Why There Are More Animals From North America In South America Than Vice Versa

KEY POINTS

  • There was an exchange of animals from North and South America during the GABI
  • Why there were more animals of North American origin in South America than vice versa has been a mystery
  • A team of researchers may have found an explanation for the disparity
  • It’s possible that many South American mammals actually went extinct

Why are there more South American animals of North American origins than North American animals of South American origin? A team of researchers found a possible explanation for the long-held puzzle.

The American continents weren’t always connected but tens of millions of years ago when the land bridge of Panama formed and connected North and South America, there was an exchange of animals between the once separated lands. Called the Great American Biotic Exchange (GABI), it is considered as one of the greatest biogeographical events.

However, one thing that has been puzzling paleontologists

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Fitbit Versa 3 and Sense Are Getting a Very “Impactful” Update

If you got a Fitbit Sense or a Versa 3, you’re getting some new software.

If you got a Fitbit Sense or a Versa 3, you’re getting some new software.
Image: Fitbit

If you’re waiting for your new Fitbit Versa 3 or Sense, you’re in for some news. First of all, you’re probably going to get your device soon, as the company said it expects to start shipping at the end of September. And second, once you receive your device, you’ll find that it also comes with new software: Fitbit OS 5.0.

Spotted by 9to5Google, both the Versa 3 and the Sense will come pre-loaded with OS 5.0, which the company calls its “largest and most impactful smartwatch update” since 2017. In a blog published this week, Fitbit said that the new software included meaningful improvements to the watch interface, a new visual system, faster navigation and general usability improvements.

If you’re a Fitbit user, you’ll have to get used

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