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Air pollution returning to pre-Covid levels
In early 2020, satellite data showed a decline in air pollution coinciding with Covid lockdowns. One year later, as lockdown restrictions loosen and regular activity resumes, air pollution is bouncing back to pre-Covid levels.
March 24, 2021
Long trip to Mars may cause astronauts to misread emotions
A study here on Earth simulating the weightless conditions of space travel showed that the longer the participants were exposed to a low-gravity environment, the more they perceived facial expressions as angry.
March 24, 2021
A supermassive black hole on the move
Astronomers have discovered a restless supermassive black hole that's moving within its galaxy.
March 23, 2021
Moon and Cancer on March 23 and 24
These next few nights - March 23 and 24, 2021 - the bright waxing gibbous moon puts the constellation Cancer in the spotlight, but out of view.
March 23, 2021
Is March’s full moon a supermoon?
The full moon on March 28, 2021, ranks as the 4th-closest (and therefore 4th-largest and 4th-brightest) of the 12 full moons of 2021. Is it a supermoon? Here's why experts disagree.
March 23, 2021
Subsurface oceans on alien worlds better for life than Earth’s oceans?
New research suggests that worlds with subsurface oceans are common in our galaxy, and might be even better environments for life than Earth's oceans.
March 23, 2021
Olympus Mons volcano on Mars, from UAE’s Hope
United Arab Emirates' Hope spacecraft has begun producing images of Mars's surface, including a view of Olympus Mons, highest volcano in the solar system.
March 23, 2021
Scientists stunned to discover plants beneath mile-deep Greenland ice
Fossilized plants found in the rocks and soil beneath Greenland ice suggests the ice melted at some point in the last million years and may do so again.
March 21, 2021
How plants manage the shift from winter to spring
How plants tolerate cold spells, and the effects of climate change on how plants manage the transition from winter to spring.
March 21, 2021
10 years after Japan’s big tsunami
See before and after satellite images of one coastal city from the March 11, 2011, Japanese tsunami. How it looked before, and how it looks today.
March 21, 2021
