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Fossil footprints track a prehistoric hunt.
Warming seawater might be the culprit, or seals might have gnawed the holes. For now, the strange circular holes in Arctic sea ice, photographed earlier this month, are mysterious.
People traveling in airplanes often see glories. The sun has to be behind your head. You’ll see the plane’s shadow cast on a cloud, surrounded by a halo of light.
New research shows that even the Arctic Ocean isn’t immune to an influx of plastic.
The new discovery of a jaw bone suggests that this prehistoric aquatic reptile would have been about the size of a blue whale.
How do some species of birds in flocks perform their wonderful, graceful, synchronized movements? Hint: they don’t just follow a leader or their neighbors.
Be a birder for a few minutes, and enjoy the distinctive song, dance and courtship display of a newly recognized Bird-of-Paradise, in new videos from the Cornell Lab of Ornithology.
“They might not always make it back to the exact beach where they were born, and instead might opt for beaches with similar magnetic properties, as if their internal GPS has just slightly mixed up addresses.”
April 22 is the date of Earth Day in part because of Arbor Day, an earlier observance. The focus of Earth Day 2018 is plastic pollution.
Explore remote, uninhabited Henderson Island in the South Pacific. It may look idyllic from above, but is littered with millions of tons of plastic.
Beauty! Moon and Jupiter May 25 to 28
Astronauts’ views of Mount Shasta