Is social media good for you, or bad? Well, it's complicated. A study of 12 million Facebook users suggests that using Facebook is associated with…

The U.S. is on track to miss its 2025 emissions reduction pledge agreed to in the Paris climate accord last year—because it doesn't have the proper policies…

When you fill a sink, the water rises at the same rate to the same height in every corner. That's not the way it works…

Trees are like our planet's lungs. Every second of every day, they're absorbing CO2 from the atmosphere, and converting it into energy. In fact, according…