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כתבות אחרונות מאתר 'Phys'
Phys

Wildlife populations have declined 73% since 1970—but many of the world's animals still aren't being counted‎

Wildlife populations around the world have declined by an average of 73% since 1970. That's according to the WWF's new 2026 Living Planet Index—a major estimate, updated every two years, of the changing state of nature. This does not mean that 73% of the world's animals have disappeared. Rather, it is the average decline in the size of wildlife populations being monitored.

03:47
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Phys

'DNA Typewriter' records cells' history in developing mouse embryo‎

Scientists have succeeded in reconstructing the family tree of cells in a developing mouse embryo. They recorded cells' relationships, starting when the fertilized egg first split in two and ending after the body and its organs took shape. That period lasted 13.5 days. (Full gestation in mice is 19 to 21 days.)

01:47
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Phys

Quantum 'birthmarks' hold lasting traces of a system's past‎

Some classical physical systems can explore many configurations over time until their long-term behavior no longer reveals their starting conditions. The sampling of available configurations according to the appropriate statistical distribution is a property called ergodicity.

21:27
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Phys

New study shows effects of hypoxia in Florida's Banana River‎

A new study by Florida Tech assistant professor of marine sciences Austin Fox, Ph.D. '15, found that low oxygen levels are contributing to the rerelease of nutrients buried on the river floor that feed harmful algal blooms. The study was based on the most widespread testing ever of oxygen levels across the Banana River.

21:09
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Phys

Conservation groups alarmed at marine mammals' deaths in Spain‎

Conservation groups on Sunday condemned the death of a dolphin transferred from France to a Spanish marine park, saying it added to the deaths of other sea mammals recently moved to Spain from Canada.

20:37
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Phys

Indonesia releases eight orangutans rescued from fires to protected forest‎

Eight orangutans rescued in recent weeks from blazes that tore through Borneo island have been released into a protected forest, Indonesian authorities and rescuers said on Sunday.

19:44
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Phys

At least 4 dead as cyclone Isaias drenches southern U.S.‎

Four people died in the southeastern United States as post-tropical cyclone Isaias posed flooding and tornado risks Saturday as it moved northward after making landfall on Florida's Gulf Coast.

19:25
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Phys

Jurassic fossil reveals ancient origins of how mammals drink milk‎

An international team of researchers has uncovered new evidence illuminating the evolutionary origins of one of the defining features of mammals: the ability to suckle and consume milk during infancy. Their findings, published in Nature, suggest that key anatomical structures required for mammalian suckling, swallowing and breastfeeding behaviors evolved nearly 165 million years ago, long before the appearance of modern mammals.

19:17
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Phys

Hurricane Simon strengthens as it nears western Mexico‎

Hurricane Simon strengthened into a powerful Category 4 storm and was expected to make landfall or skirt the coast of west-central Mexico on Sunday, according to the U.S. National Hurricane Center.

19:17
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Phys

South Korea completes trial of Arctic shipping route‎

A South Korean container ship returned on Sunday from a trial voyage through the Arctic, testing an alternative route opened by melting sea ice as conflict in the Middle East disrupts global shipping.

18:44
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