The massive annual spring migration of America's birds – millions of them – is underway. Here's how to follow along at home.

It's officially spring in Ohio. Birds are singing, flowers — including cherry blossoms — are starting to bloom and, as always, the weather is bouncing between summer and winter most days.

Ski season might be winding down in the Northern Hemisphere, but it's just starting to show signs of beginning down south. Chilean ski areas have seen their first snow of the season, today, Mach 31, ...