The sun is changing.

NASA's vapor tracer launch helps scientists better understand the Earth's atmosphere.

A U.S.

Last month, a rocket launched by North Korea soared to an altitude five times higher than the International Space Station. A Reuters analysis of publicly available data shows how that may have brought leader Kim Jong Un closer to his goal of producing a missile to hit the United States.

That’s one small step for high-altitude balloon research, one giant cheep for KFC’s Zinger chicken sa

US President Donald Trump on Thursday strongly defended his decision to pull out of the Paris climate accord, declaring himself "proud" of the move.

WASHINGTON (AP) — Poor and southern U.S.

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A large study finds yet more honeybee problems with a common but much criticized pesticide

The endangered killer whales that frequent the inland waters of Washington state are having pregnancy problems because they can't find enough to eat

As a power source, it’s like re-creating the sun on Earth, but the administration wants to reduce its funding.

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After many delays that disappointed space fans around the U.S., NASA finally managed to laun

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The location of a long-lost natural wonder in New Zealand has been identified, thanks to an accidentally found diary o