One of the expected benefits from rising atmospheric carbon dioxide is that plants may use less water and avoid some of the damaging effects of drought. The basis for this effect is that plants close the pores called stomata ...
Environment
Jul 10, 2017
2
9
Antarctica's sandy polar desert, the McMurdo Dry Valleys, has undergone changes over the past decade and the recent discovery of thawing permafrost, thinning glaciers and melting ground ice by a Portland State University-led ...
Earth Sciences
Oct 9, 2018
8
152
A new study gives the first observational evidence that the southern Amazon rainforest triggers its own rainy season using water vapor from plant leaves. The finding helps explain why deforestation in this region is linked ...
Environment
Jul 18, 2017
1
854
Since they were first observed in the 1970s by the Viking missions, the slope streaks that periodically appear along slopes on Mars have continued to intrigue scientists. After years of study, scientists still aren't sure ...
Space Exploration
Jan 23, 2019
0
44
Nature effectively "managed" forests through millennia of major climate changes and episodes of natural disturbances (e.g., wildfires, droughts, bark-beetle outbreaks), so why would nature not now be best able to restore ...
In what may be a sign of climate-change-induced conflict, researchers have captured rare photographic evidence of a jaguar killing another predatory wild cat at an isolated waterhole in Guatemala.
Plants & Animals
Jan 5, 2021
1
34
Age-related macular degeneration is the primary cause of central vision loss and results in the center of the visual field being blurred or fully blacked out. Though treatable, some methods can be ineffective or cause unwanted ...
General Physics
Nov 24, 2019
0
37
sand or gravel or snow -- develops ripples that make driving a very shaky experience. A team of physicists from Canada, France and the United Kingdom have recreated this "washboard" phenomenon in the lab with surprising results: ...
General Physics
Jul 7, 2009
2
0
Spring has barely arrived, and bushfires are burning across Australia's eastern seaboard. More than 50 fires are currently burning in New South Wales, and some 15,000 hectares have burned in Queensland since late last week.
Environment
Sep 11, 2019
0
21
Hydraulic fracturing, or "fracking," produces a lot of wastewater. Drilling one well requires millions of gallons of water that's injected into the ground to loosen rocks and release oil. While some is reused, much of the ...
Environment
Jul 16, 2015
8
42
