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Why don’t poison frogs poison themselves?

Scientists are a step closer to resolving this head-scratcher. And their findings have potential consequences for the fight against pain and addiction.

How well can seeds survive in space?

If humans want to live on Mars, we’re going to need to grow food. How well can seeds survive harsh, non-Earth conditions?

Humans are still evolving, say scientists

Scientists have identified genetic variants less common in older people than younger people. They say it’s natural selection at work, continuing to weed out disadvantageous traits.

Irma turns Caribbean islands brown

Wow. Check out these satellite images of Caribbean islands before and after Hurricane Irma

How nuclear war would affect Earth’s climate

The climatic effect of a large-scale conflict “… would be similar to that of the giant meteor believed to be responsible for the extinction of the dinosaurs. This time, we would be the dinosaurs.”

Artificial intelligence probes gravity’s lens

Researchers at SLAC and Stanford have been using brain-mimicking neural networks to analyze the spacetime distortions of gravitational lenses. They say their analysis is 10 million times faster than before.

First hints of water on TRAPPIST-1 planets

A new Hubble study suggests possible substantial water on the outer Earth-sized planets orbiting nearby dwarf star TRAPPIST-1.

Floods: Not just a coastal issue

As Hurricane Harvey shows, flooding can happen wherever large storms stall and dump lots of rain. A new study finds development is increasing in flood zones far from any coast.

Best places to watch 2017 eclipse

Looking for road maps showing the path of totality for the August 21, 2017 eclipse? Click here.

Studying sun’s atmosphere on eclipse day

Monday’s total solar eclipse will give scientists a rare opportunity to study the lower regions of the sun’s corona. Here’s what NASA scientists will be investigating.