The chemical element sulfur is an important constituent in many pharmaceuticals, and consequently, it is desirable to introduce sulfur-containing fragments efficiently in a broad range of chemical compounds. The Skrydstrup ...
The amount of carbon dioxide released from thawing permafrost might be greater than previously thought because of a process called mineral weathering, according to a new study by University of Alberta ecologists.
With sea ice in the Arctic melting at an alarming rate, opportunities for trans-Arctic shipping are opening up, and by mid-century ships will be able to sail right over the North Pole—something not previously possible for ...
Slowing activity at Hawaii's Kilauea volcano has prompted scientists on Friday to downgrade their alert level for the mountain.
Many natural products and drugs feature a so-called dicarbonyl motif— in certain cases, however, their preparation poses a challenge to organic chemists. In their most recent work, Nuno Maulide and his coworkers from the ...
Early Earth was a hot, gaseous, dusty and dynamic planet with an atmosphere and an ocean. Then its surface cooled and stabilized enough for clouds, landmasses and early life to form about four billion years ago, during what's ...
The air in the United States is much cleaner than even a decade ago. But those improvements have come mainly in summer, the season that used to be the poster child for haze-containing particles that cause asthma, lung cancer ...
Scientists have long thought oxygen appeared in Earth's lower atmosphere 2.7 billion years ago, making life as we know it possible. A Rice University researcher has added evidence to support that number.
Engineers at the University of California San Diego have shed new light on a scientific mystery regarding the atomic-level mechanism of the sulfur embrittlement of nickel, a classic problem that has puzzled the scientific ...
"It's a code red day for ozone." If you hear this on your local news, what does it mean? Are you at risk? Do you know what to do? An air quality alert like this informs the public about pollution levels in the air and advises ...
Sep 21, 2018
in