Dashing the dream of ideal 'invisibility' cloaks for stress waves

Whether Harry Potter's invisibility cloak, which perfectly steers light waves around objects to make them invisible, will ever become reality remains to be seen, but perfecting a more crucial cloak is impossible, a new study ...

Posture impacts how you perceive your food

Summertime is often filled with outdoor parties and food trucks, meaning you're spending more time standing up and eating. But if you want to actually enjoy your meal, researchers say you're better off finding a seat.

Dogs mirror owner's stress

The levels of stress in dogs correlate with the stress of their owners, according to a new study from Linköping University, Sweden. The scientists believe that dogs mirror their owner's stress level, rather than vice versa. ...

Tolerance to stress is a 'trade-off' as fruit flies age

The consequences of aging are damage and degeneration of cells, which leads to loss of function, vulnerability to disease, and eventually, death. A hallmark of the aging process is the progressive decline of the nervous system, ...

Heat, not drought, will drive lower crop yields, researchers say

Climate change-induced heat stress will play a larger role than drought stress in reducing the yields of several major U.S. crops later this century, according to Cornell University researchers who weighed in on a high-stakes ...

Asia's glaciers provide buffer against drought

A new study to assess the contribution that Asia's high mountain glaciers make to relieving water stress in the region is published this week (29 May 2019) in the journal Nature. The study has important economic and social ...

Link to stress, health of whales might be in giant mouths

Whale researchers in New England believe they've found a new way to measure the amount of stress felt by whales when they experience traumas such as entanglements in fishing gear, and they say the technique could help protect ...

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Stress (biological)

Stress is a biological term which refers to the consequences of the failure of a human or animal to respond appropriately to emotional or physical threats to the organism, whether actual or imagined. It includes a state of alarm and adrenaline production, short-term resistance as a coping mechanism, and exhaustion. Common stress symptoms include irritability, muscular tension, inability to concentrate and a variety of physical reactions, such as headaches and elevated heart rate.

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