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Gold mining introduces an overlooked threat to wild caimans

Mercury pollution from artisanal gold mining in tropical regions is finding its way into wildlife. A team from the University of Vienna and the Veterinary University of Vienna shows that mercury exposure impairs the glucocorticoid response that helps animals cope with acute stress. This weakened stress response could reduce the caimans' chances of survival and reproduction. The findings, recently published in the journal Communications Biology, point to a previously overlooked endocrine threat to crocodylians.

Phys.org · 23h ago
New study examines how diabetes and weight-loss drugs affect employment and working hours

Diabetes and weight-loss medications may have economic effects beyond health care spending, according to new research from NYU Abu Dhabi. Using population-wide data from Denmark, the study found that diabetes treatment caused an increased likelihood of employment, while weight-management treatment caused longer working hours among people already employed. The findings also point to implications for income tax revenue and public health care spending.

Phys.org · Nov 3
Stem cells in deep sleep may point to a secret reserve for lifelong blood renewal

Researchers at the German Cancer Research Center (DKFZ) and the HI-STEM Stem Cell Institute have discovered a group of particularly long-lived blood stem cells in mice. These cells remain in a dormant state for an exceptionally long time while retaining their ability to generate new blood cells. This newly discovered cell population may be responsible for sustaining blood regeneration and immune defense throughout a mouse's entire life.

Phys.org · Nov 2
The desire to be remembered may be linked to better mental health

Most people, at some point, wonder what will remain of them after they are gone. Will their family remember them? Will something they created, taught or contributed continue to matter? A new study suggests that this deeply human desire may be connected to mental health. Researchers found that people who more strongly believed they would be remembered after death also tended to report better mental health and lower levels of problematic substance use and addictive behaviors.

Phys.org · Nov 2
Drone-based AI system tracks cattle growth without stressful trips to scales

In beef cattle production, determining the ideal time to sell makes all the difference in a producer's costs. This is because, once an animal reaches its natural growth limit, it stops gaining weight significantly. From that point on, every additional day in a feedlot means spending money on feed without gaining meat in return.

Phys.org · Oct 30