A warmer world will be a hazier one

Aerosols, tiny solid and liquid particles suspended in the atmosphere, impact the environment by affecting air quality and alter the Earth’s radiative balance by either scattering or absorbing sunlight to varying degrees. What impact does climate change, induced by greenhouse gases (GHGs), have on the aerosol “burden”–the total mass of aerosols in a vertical column of air? Past research done […]

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Dark matter is (probably) more complex than you think

Scientists typically believe that dark matter behaves in a simple way: if one clump encounters another, the two interact solely through gravity. However, researchers have published findings which suggest that there’s more involved. They’ve noticed dark matter (the blue lines in the photo above) lagging behind a galaxy due to friction, hinting that there are factors beyond gravity at work. […]

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Depression Speeds Aging In The Elderly

Depression Speeds Aging

Major depression is not only psychologically crippling but can also age a person’s body on a cellular level. That’s the conclusion of a new study that examined blood samples from more than 2,400 people with and without depression. Researchers at the Free University of Amsterdam measured the length of telomeres, the small caps at the ends of chromosomes that protect […]

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Plate tectonics thanks to plumes?

“Knowing what a chicken looks like and what all the chickens before it looked like doesn’t help us to understand the egg,” says Taras Gerya. The ETH Professor of Geophysics uses this metaphor to address plate tectonics and the early history of the Earth. The Earth’s lithosphere is divided into several plates that are in constant motion, and today’s geologists […]

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Tomatoes with genetic mutation have no taste

Pile of tomatoes

Tomato lovers have long known that the red fruit sold by supermarkets tastes like cardboard. A new study has found why: A genetic mutation that gives commercially produced tomatoes their uniform color also prevents the production of sugars and carotenoids that give a proper tomato its taste and health benefits. The mutation “is in literally 100 percent of modern breeds […]

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Bacteria That Make You Thin

The species of bacteria that dominate our guts may strongly affect whether we’re thin or fat. Researchers at Washington University collected samples of gut bacteria from pairs of twins in which one was obese and the other thin. Then they transplanted the bacteria into mice. The mice that received the bacteria from the obese twins became obese; the mice that […]

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