Psychology & Psychiatry

Scientists want to know how the smells of nature benefit our health

Spending time in nature is good for us. Studies have shown that contact with nature can lift our well-being by affecting emotions, influencing thoughts, reducing stress and improving physical health. Even brief exposure to ...

Health

Pain-based weather forecasts could influence behavior

For individuals who experience chronic pain, weather can be a significant factor in their day-to-day plans. In a recent study from the University of Georgia published in the International Journal of Biometeorology, about ...

Neuroscience

Why children misbehave when they are tired

Being tired is a feeling we often experience. When we do certain activities—physical or mental—over a period of time, or even after experiencing intense emotional states, we feel tired, perhaps even exhausted.

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Atmosphere

An atmosphere (from Greek ατμός - atmos, 'vapor' + σφαίρα - sphaira, 'sphere') is a layer of gases that may surround a material body of sufficient mass, by the gravity of the body, and are retained for a longer duration if gravity is high and the atmosphere's temperature is low. Some planets consist mainly of various gases, but only their outer layer is their atmosphere (see gas giants).

The term stellar atmosphere describes the outer region of a star, and typically includes the portion starting from the opaque photosphere outwards. Relatively low-temperature stars may form compound molecules in their outer atmosphere. Earth's atmosphere, which contains oxygen used by most organisms for respiration and carbon dioxide used by plants, algae and cyanobacteria for photosynthesis, also protects living organisms from genetic damage by solar ultraviolet radiation. Its current composition is the product of billions of years of biochemical modification of the paleoatmosphere by living organisms.

This text uses material from Wikipedia, licensed under CC BY-SA