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Antarctica

Environment

Rising greenhouse gases have cooling effect on Antarctica’s atmosphere

A "negative greenhouse effect" means rising concentrations of CO2 and methane have slightly cooled parts of Antarctica’s upper atmosphere, but that could change as the air becomes more humid

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Technology

Nanobot uses a DNA clutch to engage its engine

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Schematic image of GaN hollow nanowires on a sapphire substrate.

Technology

Lasers smaller than a human hair emit doughnut-shaped light

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Space

Russia’s space weapon: Is it nuclear and does it pose a threat?

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Environment

Reforestation initiatives in Africa may damage grassland and savannah

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Medication abortion pills, misoprostol and mifepristone

Health

Abortion medication is as safe over telehealth as in a doctor’s office

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Life

The right microbes on plant roots can make your tea taste better

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Environment

Inside the Brooklyn start-up making clean jet fuel with captured CO2

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Humans

When does a bone become a fossil?

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Mind

Microdosing LSD increases the complexity of your brain signals

A measure of consciousness called neural complexity increases even with small doses of LSD, but we still don't know the potential risks of microdosing psychedelic drugs

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Life

Poison frogs tap-dance to rouse prey and make them easier to catch

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Health

School uniforms may prevent children from getting enough exercise

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Health

Injections of drug-filled nanoparticles may relieve arthritis pain

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Humans

Dogs and horses buried with Iron Age people may have been beloved pets

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