科学与环境
Happy face, angry voice: Human–dog interaction study tracks conflicting cues
来源: Phys.org - latest science and technology news stories · 发布于
Dogs, having lived alongside humans for tens of thousands of years, are keenly tuned in to our emotions. Behavioral experiments, brain studies and even measurements of heart rate all suggest dogs respond differently depending on the emotional expressions they encounter in humans.
Dogs, having lived alongside humans for tens of thousands of years, are keenly tuned in to our emotions. Behavioral experiments, brain studies and even measurements of heart rate all suggest dogs respond differently depending on the emotional expressions they encounter in humans.
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Wider daily temperature ranges linked to stronger fevers in amphibians and reptiles
When amphibians and reptiles get an infection, they sometimes raise their body temperature above its usual level by moving to a warmer environment. This well-documented behavioral response is known as behavioral fever.
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Nitrate pollution in rivers linked to dry climates, not just human activity
Nitrate, a chemical compound of oxygen and nitrogen often used in farm fertilizers, can rise to toxic levels in surrounding water under very dry conditions. This relationship has traditionally been attributed to agricultural runoff or human waste in the environment, but new resea
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Elephants found to be increasingly isolated, leading to fractured social networks
Humans and many other social animals thrive in well-established community networks. Asian elephants are one example of a species that flourishes in groups that work together to access food and care for their young, among other social bonds.
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