Peggy’s data were a bit of a shock.
From an anchored vantage point in an expanse of the southeastern Bering Sea west of Alaska, Peggy, or mooring M2, had monitored conditions in the water for 25 years. A line of sensors extended down more than 70 meters to where Peggy was tethered to the seafloor, collecting information on temperature, salinity and other properties of the water.
Reviews & Previews
The Big NineAmy WebbPublicAffairs, $27
Whether artificial intelligence is humankind’s best friend or greatest threat has been widely debated. We’ve all heard promises of device-studded smart homes conferring unprecedented convenience, as well as warnings of killer robots. The Big Nine is a different kind of story about the potential risks and rewards of AI.
Number of donors drops —03/12/2019 - 06:00 Biomedicine, Cells, Technology
Both laymen and surgeons have become faint-hearted about heart transplants.… The rejection and infection problems remain unsolved, and although Dr. [Denton A.] Cooley has performed the greatest number of transplants in the world, he has had to stop operating for lack of donors. — Science News, March 15, 1969Update
Candidates for heart or other organ...
Reviews & Previews
Skeleton KeysBrian SwitekRiverhead Books, $26
At this very moment, voracious cells are eating away at your bones. Not to worry, though — that’s just a normal part of bone maintenance in healthy adults. The formation of new bone cells balances out the removal of old bone cells. Although bone-making cells rev up when a bone breaks or disease sets in, eventually bone-eating cells kick...
To take his fledgling lab to new heights, Liangfang Zhang hatched a plan that he considered brilliant in its simplicity. It involved procedures that many of his peers found a little out there. But if he could make his idea work, it would clear a major hurdle to safely ferry therapies through the body on nanoparticles one-thousandth the width of a human hair.
Yet back in 2010, the young...
Helping people stay up to speed on the latest advances in science is a big part of our mission at Science News. We’re aiming for sophisticated and succinct, in a way that works for readers’ busy lives. That means making tough decisions on which of the countless scientific papers being published are worthy of coverage and what breaking news has science that needs explanation and...03/07/2019 - 06:15 Science & Society, Health, Earth
Letters to the Editor
Which way is up?03/07/2019 - 06:00 Astronomy, Plants, Health
Initial observations of the Kuiper Belt object MU69, nicknamed Ultima Thule, suggested it had a snowmanlike shape. Ultima Thule’s two lobes are connected by a narrow neck that appears brighter than the rest of the space rock’s surface, Lisa Grossman reported in “New Horizons shows Ultima Thule looks like a snowman, or maybe BB-8” (SN: 2/2/19, p. 7).
“The photo of...
On the periodic table, most elements have at least one stable form. But others have only unstable forms, all of which decay by emitting radiation and transforming into different elements until becoming one that’s stable. The timescale of radioactive decay is known as an element’s half-life, the time it takes for a sample of an element to be reduced by half.
Generally for the elements...