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Users of an app developed by the University of Michigan to help with jet lag entered information on their time zone and sleep patterns that helped academics with their work. But is the approach valid?

Scientists have found the first eukaryotic organism that functions fine without mitochondria, the "powerhouses" that make energy for the cells of yeast, humans and other animals.

The Summer Olympics in Rio were supposed to be a showcase for modern, prosperous Brazil. Instead, the country is suffering a national meltdown that will now include the president's impeachment trial.

The pontiff says he is willing to create a commission on the issue. It could signal a turning point for the Roman Catholic Church, which does not allow women to serve in ordained ministry.

Jaguar is now owned by Indian car company Tata. A drive through the LA hills in a super high-end convertible conveys some insights into what a country's auto industry says about its role in the world.

The administration says it authored the notice because "many parents, schools and districts have raised questions about this area of civil rights law."

Before the launch of ESPN's digital site The Undefeated, which will focus on minorities and sport, Editor-in-Chief Kevin Merida explains why the cross section of sports, culture and race is important.

The Obama administration says schools must allow transgender students to use the bathroom that matches their gender identity. David Greene talks to Matt Sharp of the Alliance Defending Freedom.

When fires swept through the Canadian town, families had to pick up and go — sometimes leaving beloved animals behind. One family is relieved. They found out Marshall, their beer loving pig is safe.

At a festival in Russia, a costumed reenactor was preparing for a mock battle when he spotted an aerial invader from the future. Footage shows the medieval knight threw his spear, downing the drone.