Think of it as a celestial parlor game: What is the minimum number of satellites needed to see every point on Earth? And how might those satellites stay in orbit and maintain continuous 24/7 coverage while contending with ...
Space Exploration
Jan 10, 2020
3
192
There's new hope for an endangered California frog that has vanished from half of its habitat.
Ecology
Dec 12, 2019
0
4
New time-lapse videos of Earth's glaciers and ice sheets as seen from space—some spanning nearly 50 years—are providing scientists with new insights into how the planet's frozen regions are changing.
Earth Sciences
Dec 10, 2019
11
90
With water covering more than 70 percent of the Earth's surface, it's no wonder our planet is nicknamed the Blue Marble. Seen from outer space, our marble is interwoven with swirls of clouds and splotches of land defined ...
Earth Sciences
Dec 9, 2019
0
10
Heavy snowfall across a large swath of southeast France has left one person dead and cut power to some 300,000 homes, with icy conditions snarling train and road traffic Friday.
Environment
Nov 15, 2019
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11
Throughout their evolutionary history, animals in regions with limited lowland habitat have evolved to adapt to higher elevations. Although lemurs—among the most endangered mammals on earth—are flexible and can persist ...
Ecology
Nov 6, 2019
0
13
Cold water released from Lake Shasta into the Sacramento River to benefit endangered salmon can be detrimental to young green sturgeon, a threatened species adapted to warmer water. But scientists at UC Santa Cruz and the ...
Ecology
Aug 20, 2019
0
6
On the surface, bighorn sheep migration is like that of many other large mammals, moving to higher elevations as snow melts in the springtime then returning to lower ground to forage as winter sets in.
Ecology
Aug 2, 2019
0
13
The quantum logic clock—perhaps best known for showing you age faster if you stand on a stool—has climbed back to the leading performance echelons of the world's experimental atomic clocks.
Quantum Physics
Jul 15, 2019
0
96
Without significant global reductions in greenhouse gas emissions, Colombia will have 60 percent less land suitable for rice production by the 2050s, according to a new study by the CGIAR Research Program on Climate Change, ...
Environment
May 30, 2019
0
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