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The crater-dome illusion: When your brain inverts the image
The crater-dome illusion happens when you look at an image of a crater and the angle of the light causes it to appear as a dome. Here's how to fix it.
November 3, 2024
2024 Antarctic ozone hole 7th-smallest since recovery began
Scientists reported this week on the extent of the 2024 Antarctic ozone hole, saying it was the 7th-smallest since recovery began in 1992.
October 31, 2024
A large fireball blazed over Lake Erie on October 21
Witnesses described a large fireball over Lake Erie last night. The American Meteor Society had some 350 reports as of this writing. Thousands must have seen it!
October 22, 2024
Monday’s livestream: Extreme weather and climate change with Davide Faranda
Watch our replay about climate change and extreme weather with climatologist Davide Faranda, an expert on cold spells, heatwaves and severe thunderstorms.
October 15, 2024
Biobots are a 3rd state between life and death
Biobots are tiny, multicellular robots powered by living cells to perform tasks, and they're a third state between life and death.
September 29, 2024
Hurricane Helene made landfall in Florida as a Category 4
Hurricane Helene hit Florida as a category 4 storm near Perry. The storm surge has washed away homes and winds have caused power outages. More here.
September 27, 2024
Will you see colors in aurora? Or do you need a camera?
If you live below 50 degrees N. latitude, any aurora visible is likely to be low on your horizon, and you're less likely to see vivid colors.
September 26, 2024
SKA telescope gets its ‘1st fringes’
The SKA telescope SKA-Low has successfully measured a correlated signal using 2 of its stations. Astronomers call such a measurement "1st fringes."
September 24, 2024
Did humans drive Cyprus dwarf hippos and elephants extinct?
A new study shows that now-extinct dwarf hippos and elephants on the island of Cyprus were likely driven to extinction by humans about 14,000 years ago.
September 22, 2024
Did social isolation drive Neanderthals to extinction?
New DNA studies of a Neanderthal from France support a theory that Neanderthals became extinct because their populations were isolated, leading to inbreeding.
September 18, 2024
