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6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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ScienceShot: Bees Age Faster When They Raise Offspring
17 April 2013 6:00 pm
Your parents always said you were giving them gray hair. Now, science is backing them up, at least in the case of bees. Researchers have found that nurturing the hive's progeny accelerates aging in the insects. In summer, worker honey bees usually spend several weeks feeding the queen's new larvae (the queen is marked in green). Workers then change careers, living out their days as pollen-collecting foragers. They die a mere 2 weeks after making the switch, showing a steep decline in brain function. But bees born just before winter, without a brood to nourish, live nearly a year. To investigate, researchers placed winter bees in a summerlike environment, both with and without young bees to care for. The bees with a brood played along, feeding the babies and then developing into foragers who died after 2 weeks. But brood-free foragers lived up to 10 weeks with no cognitive decline, the researchers report online today in The Journal of Experimental Biology. They noticed high levels of lipofuscin, an "age pigment," in short-lived foragers and much lower levels in longer-lived bees. These changing levels suggest that, for bees, aging is a dynamic process that can be slowed or even reversed. Maybe that explains why your dad started playing bass in a garage band after you left the nest.
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