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Building and operating telescopes can generate a lot of greenhouse gases. In fact, it's as if each astronomer in the world was driving more than 100,000 miles per year, a new study finds.

The ruling amounts to an immediate ban of Facebook and Instagram in Russia, where both platforms are already blocked. WhatsApp, which is owned by the same company, is still allowed.

One woman living in Kabul describes how, despite food shortages and repression, her family is celebrating the Persian new year with what they have.

The Climate Action Plan passed in December aims for a 90% cut to gas emissions by 2050.

A year after ramping up to vaccinate 6 million low-income residents, community clinics are in dire final straits waiting for state money. Some are cutting services.

This vibrant street art is a sign of the spirited rebuilding going on in the northern Iraqi city, after ISIS was defeated in 2017.

One weekend in 1926, a young Talent, Ore., resident, attending school in Tacoma, Wash., told his family that he was going to walk across town to visit…

After weeks of bombarding the city, Russia offered the ultimatum on Sunday: If Mariupol surrenders, it will let civilians leave and humanitarian aid enter. Ukrainian officials refused.

Authorities have not yet determined the total number of casualties or why the plane went down as debris is seen littered across a mountainside in Guangxi's Teng county.

We're using new geopolitical and military terms — and resurrecting and revising old ones — to discuss Russia's invasion of Ukraine, a conflict in which information is treated as another battlefield.