In the space beyond Earth's atmosphere, countries are focusing on nationalist pursuits and ignoring the consequences for the rest of humanity. How can we keep the peace and build a sustainable future?

A new theory of language suggests that people understand words by unconsciously simulating what they describe. Repeated exposure – and the simulation that comes with it – makes it easier to act.

We asked experts on ethics, constitutional law and European political history to analyze Trump's Oval Office address. Here's what they heard in his speech about 'crisis' at the US-Mexico border.

Are Democrats or Republicans more caring about others? One study of the role compassion plays in politics provides some surprising answers. And then there were the outliers: Trump voters.

Gone are the support, preparation and security typically granted to staff correspondents.

There are ways to reduce the risk of protests like France's yellow vests movement.

Elizabeth Seton was canonized in 1975 as a saint. Charities founded by her continue her work with poor immigrants.

China just became the first country to land a probe on the far side of the moon. It's a technological achievement and another sign of China's capabilities and ambitions in space.

Feel like visiting another star system or dimension? You can do this by traveling through a spacetime portal of a black hole. But you better choose carefully. All black holes are not created equal.

Schadenfreude seems to arise out of envy and a sense of justice. But some psychologists believe a darker impulse is at play.