Every winter, millions of people brace for news about the polar vortex - that vast, spinning mass of frigid Arctic air high in the stratosphere that occasionally escapes its usual boundaries and ...

Freedom of speech is a bellwether: how any society tolerates those with minority, disfavored, or even obnoxious views will often speak to its performance on human rights more generally. In ...

Regular exercise has been shown to help boost energy levels and enhance your mood. It may also be associated with many other health benefits, including a reduced risk of chronic disease. Exercise is ...