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Jeb Bush's shifting positions on the Iraq War gave an opening to Republican rivals for the presidential nomination. And will Hillary Clinton answer questions directly on her trip to Iowa next week?

In their new book, The New Digital Age, Google's Eric Schmidt and Jared Cohen discuss balancing privacy and security in the digital age — especially in countries with no history of privacy legislation — and the lack of a delete button on the Internet.

Bitcoin hit a record high, marking a remarkable comeback from a period known as the "crypto winter." A big catalyst behind the gains has been the approval of new bitcoin investment funds.

The poll also found that, at this point, no other mainstream Democrat who has been mentioned as a replacement for the president on the ticket does better than President Biden.

Researchers are developing technology to control the movement of cockroaches. Strapped with electrodes and sensors, these insects we often loathe could be used for disaster relief or surveillance.

Loneliness takes a toll on many aspects of health, in part because it activates a fight-or-flight immune response. That may have helped ancestors survive lonely exile, but can slowly kill us today.

When octopuses and fish hunt in groups in the Red Sea, the leadership roles are more dynamic than researchers knew — as are some ways the animals enforce cooperation.

Trump's pick to lead the EPA, former N.Y. Rep. Lee Zeldin, does not have a major profile on environmental issues and is expected to embrace Trump's promised roll back of environmental regulations.

American scientists have long worked abroad, but recruitment efforts are increasing due to cuts by the Trump administration.

Today's teens struggle with big feelings — and their parents struggle to have hard conversations with them. A psychologist explains how to help your kids cope with pressure and stress.