Google has become the largest corporate buyer of renewable energy on the planet.
The Arctic is missing a chunk of sea ice the size of Mexico.
If these stunning sunset destinations don't inspire an impromptu vacation, we don't know what will.
Hit the slopes without breaking the bank.
This year's iconic spruce comes from a backyard 170 miles away.
The riot of colors that erupts on trees each fall drives billions of dollars in tourism and remains a key way for people to connect with nature.
As cold weather approaches, it's time to start planning your next island getaway.
It has become increasingly clear in recent years that ocean waters are eating away at the undersides of the ice shelves that fringe Antarctica and buttress its many glaciers.