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Egypt is conducting airstrikes on positions held by the self-declared Islamic State in Libya, in response to a video apparently showing the militants' beheading of Egyptians on the Libyan coast.

On Presidents Day, we consider some presidential firsts when it comes to new technologies. Play along: Who was the first president to have a telephone? How about the first to ride on a steamboat?

So far, 13 states have adopted the Next Generation Science Standards, but elsewhere these standards are causing controversy because of what they say about climate change. In Wyoming, reports Aaron Schrank, it's a particularly touchy issue.

Pakistan is returning to an old and dreaded practice: the formation of secret military courts to try people accused of threatening the county's security.

Four hours after talks started, both parties walked out and reiterated their hard lines. Now, Greece's membership in the currency bloc is in question.

Kentucky is loaded, undefeated and everyone's favorite to win the national championship. But will college basketball's best team come through at the end? Nicole Auerbach of USA Today has some answers.

The hack of insurer Anthem is one in a string of costly cyberattacks worldwide. In Silicon Valley and beyond, startups are taking very different approaches to helping companies outsmart the attackers.

A federal judge in Texas said President Obama had overstepped his authority. The president's plan was designed to shield from deportation as many as 4 million people living in this country illegally.

Two days before the first of President Obama's executive actions on immigration were to take effect, the new rules have been put on hold by a federal judge's ruling in South Texas.

Savory fish are a staple for penguins, but the poor birds lack the ability to taste the umami flavor of their meals. One hypothesis? The genes at play got frozen out of commission.