This Week in Science: How Many Ants Are There in the World?
Here’s a quick rundown of this week in science . . .
1. How many ants would you guess there are in the world? Whatever you’re thinking, it’s more. A study in Germany put the number at 20 QUADRILLION ants. That’s 20,000 trillion, or about 2.5 million ants for every human.
2. In space news: The James Webb telescope took a wild picture of Neptune . . . and NASA released audio of a meteorite crashing into Mars. It’s the first audio recording of something hitting another planet. (Here’s the audio.)
3. Speaking of crashing into stuff: Next Monday is the big day for NASA’s “DART” mission, short for “Double Asteroid Redirection Test.” They’re crashing a one-and-a-half-ton spacecraft into an asteroid at 13,000 miles an hour to see if it changes its orbit. So if a big one ever comes our way, maybe we can deflect it.
4. A study found that in theory, it might be fairly cheap and easy to refreeze the north and south poles to keep global warming at bay. For $11 billion a year, we could have planes spray aerosol in the atmosphere to shield them from sunlight.