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Scientists around the world are working on a way to inject vaccines painlessly. The trick is to make the needles so small. they don't interact with the nerve endings that signal pain.

The campaign emerged on social media last week and urges people to hoist a white flag or cloth to signal they needed immediate help. Food retailers and celebrities alike have responded.

The Telecom industry agreed to delay the launch of 5G wireless services to try to resolve concerns that 5G signals can interfere with automated systems that pilots use when landing in poor weather.

Professor Jon Levy went viral for wearing a mask during a Zoom call alone in his office. He has some thoughts about why.

President Biden traveled to NATO's eastern flank as a show of support to allies most unnerved by Russia's invasion of Ukraine.

For some would-be ant queens, the easiest way to take over a colony is to dupe its worker ants into committing regicide.

In a deal with the Taliban last year, the Trump administration agreed to withdraw U.S. troops by May, but the Biden administration says the Taliban isn't keeping its end of the bargain.

Russian President Vladimir Putin weighed in for the first time on answers from the U.S. and NATO to Russia's security proposals. Other signals from the Kremlin are encouraging.

Human brain cells in a dish have learned to play Pong, a simple video game created in the 1970s. This novel achievement is part of a larger effort to understand how brain cells learn.

When Microsoft introduced Windows 8 last year, the software giant billed the new operating system as one of the most critical releases in its history. The system would bridge the gap between personal computers and the fast-growing mobile world of tablets and smartphones. But this week, the company sent signals that it might soon alter Windows 8 to address some early criticism.