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Half of America’s Cities Are Depopulating. We Could Be Headed for a Ghost Town Era.

Here’s what you’ll learn when you read this story:

  • By studying population trends and forecasting models, researchers have come to believe that nearly 15,000 U.S. cities will face noticeable depopulation by 2100.
  • Populated areas of the cities in question could experience a decline of up to 44 percent.
  • Projections call for the biggest drops in city populations to occur in the Northeast and Midwest.
Half of America’s Cities Are Depopulating. We Could Be Headed for a Ghost Town Era.https://www.popularmechanics.com/science/a70793664/half-of-us-cities-are-depopulating-ghost-town-era/Open linkView original on lemmy.dbzer0.com
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sciencebyFTonsilStones

Spider which uses spring trap to capture prey discovered in Australia

Researchers say their hunting method - which allows them to prey on dangerous ants - is unprecedented.

The snare's "exceptionally high power" flings the ant into a bigger web at "15 times the most extreme g-forces experienced by jet pilots", said lead researcher Prof Ajay Narendra.

"The snare mechanism seems to have evolved as a highly specialised way of allowing the spider to 'pick off' potentially hazardous prey one at a time and transport them a safe distance away from ant trails and nests," researcher Dr Jonas Wolff said.

Spider which uses spring trap to capture prey discovered in Australiahttps://www.bbc.com/news/articles/c70y138y995oOpen linkView original on lemmy.ca
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