Some animals just think they're good at a camouflage. This leopard actually is.
It wasn't supposed to be this way.
Thanks to the fracking boom, the ratio of men to women tops 3 to 2 in some places of North Dakota -- and harassment and assault are on the rise.
The Population Institute honors our illustrated feature "7 Billion, Unpacked."
An outdoors industry association says that we spend about $646 billion dollars every year on apparel, equipment, accessories, food, transportation, lodging and so forth.
Because bears are cute, but money is cuter.
The government’s new climate-change report is loaded with charts that outline the heat waves, droughts, and floods that will become the new normal where you live. Here are the 32 scariest.
The Golden State's birthrate has dropped to 1.94 and economists are freaking out.
The thick yellow air over China's capital city bodes poorly for life in its still-hot economy.