Frigid parts of the U.S. are warming up for a couple days, but don't get comfortable yet.
It's the first time in known history that something like this could be viewed by so many people.
See how many of the show's references you can spot in the expanded Springfield subway system.
It must sting when the world's biggest smog-hole is calling your air polluted.
It's every little boy's wish come true.
A select few countries have been responsible for the majority of the world's CO2 emissions since the '70s.
New green-power technology transforms motions like walking and touching into potent jolts of energy.
Spoiler alert: It's mostly just watching TV.
Expect unusual East Coast cold and West Coast heat to "remain in place through most of the remainder of March."
And it's probably not in the way you think.
A conversation with one of the fire chiefs who responded to the last major U.S. gas explosion.
A recent decline in the rate of increased worldwide temperatures is masking the brow-sweating temperatures of the future.
Can one of the world's most famous historic churches hold up to modern-day lighting?
Europe's airplane activity in this visualization looks like a hive of angry, electrified bees.
A 27-year-old woman was left as a newborn in restaurant bathroom, but now is tracking down her biological mom on Facebook.
One man's quest to photograph pies atop horses, on satellite dishes, and in trees.
Most Americans don't. Take our quiz to see how you measure up.
The Castro neighborhood is about to get a lot more festive.
The warming climate is predicted to bring punishing rainstorms.