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Engineers made a radio receiver with building blocks the size of two atoms. One benefit of a radio so small you can barely see it: The machine works at extremely high temperatures.

Satirist John Clarke's pitch-perfect portrayal of an Australian senator denying the impact of an oil spill once prompted a Snopes fact-check report.

It's one of several suggestions that connect the ancient holiday, remembering the Israelites' flight to freedom, with the world's current refugee crisis.

Inventing even the simplest product is a fraught process. Mike Davidson and Mike Smith have learned that lesson the hard way as they seek to change the way teeth get cleaned.

Enlisting parents to make sure teens get counseling is a start, but a lot of families need more support, research suggests. Even finding the right therapist can be daunting.

What do ancient Sumerians, Paulaner monks, Arthur Guinness and a whole bunch of party-hardy millennials have in common? Pairing beer with God.

Kelly says his twin brother, Scott Kelly, who just returned to Earth after 340 days in space, was temporarily 2 inches taller. NASA is studying the pair to explore what spaceflight does to the body.

Ethan Couch, who killed four people when driving drunk, and his mother were apprehended in Puerto Vallarta, Mexico. Texas authorities say they are working with Mexico to send the pair back to the U.S.

A Texas judge has dismissed felony charges against two people who concealed their identities and tried to buy fetal tissue from Planned Parenthood.

A little wing flap came more than 24 hours after the first "pip" — a hole in eggshell — was spotted, bringing sighs of relief and joy to the baby bird's fans.