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For the first time since the most recent Ebola outbreak began, Liberia, Guinea and Sierra Leone have each reported zero cases of Ebola for 42 days in a row. But the risk of small flare-ups remains.

It's 200 times more powerful than a typical supernova and 570 billion times brighter than our sun. First spotted in June, this stellar monster is wowing astronomers, who wonder what's at its heart.

Adolf Hitler wrote his famous manifesto while serving time for an attempted coup that started in a German beer hall. Author Peter Ross Range says, "There was an obvious need to get his message out."

The Zika virus first appeared in South America about eight months ago and it has since spread to 14 countries.

The U.S. church, which allows same-sex marriage, has been sanctioned by leaders of the international fellowship. Episcopalians won't be allowed to participate in key decision-making for three years.

Northern long-eared bats were listed as a "threatened" species this week after being ravaged by a disease that has killed millions of bats. Some environmentalists say the protection is not enough.

They're angry about everything from overcrowding and hazardous buildings to looming bankruptcy. But teacher strikes are illegal in Michigan, and opponents say the actions hurt students and parents.

The film about the financial crisis has been nominated for five Oscars. We look at the how things have changed since 2008.

We've been covering toxic stress for over a year. In this new segment, senior producer Daisy Rosario looks at how programs are attempting to address mental health from birth.

A family divided by immigration law. Four U.S. citizen siblings are finding ways to make it work after their mother was denied a green card in Arizona.