This colorized image captured by NASA's Solar Dynamics Observatory space telescope shows a powerful solar flare blasting from the sun on March 31, 2022. (Image credit: NASA) (opens in new tab)NASA's orbiting Solar Dynamics Observatory captured yet another solar...
While we sleep this spring, billions of birds will be flying through the night from their wintering grounds to their breeding territories. Bird migration is a mind-bendingly astonishing phenomenon: these tiny creatures fly thousands of kilometers with enough precision...
San Diego looked very different back in the Eocene epoch, from about 56 million to 34 million years ago. The area’s now arid climate was warmer and more humid, its lush subtropical forests teeming with primates and marsupials. Now...
Imagine you are a young Bar-tailed Godwit, a large, leggy shorebird with a long, probing bill hatched on the tundra of Alaska. As the days become shorter and the icy winter looms, you feel the urge to embark on...
The antiviral therapies remdesivir, molnupiravir, and the active ingredient in Pfizer's Paxlovid pill (nirmatrelvir), remain effective in laboratory tests against the BA.2 variant of SARS-CoV-2, the virus that causes COVID-19. The BA.2 variant also remains susceptible to at least...
One of the important functions of a river is to remove some of the pollution that can end up in the water, like lawn fertilizers and harmful bacteria, before that water reaches sensitive downstream ecosystems such as estuaries and...
We are all products of our genes and environment, of nature and nurture. Thanks to research on parenting and child development, people are more aware than ever before of how varied environmental circumstances—including social and emotional experience—may help or...
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