Apple’s Mac operating system has undergone many sizeable changes over the years. Here’s every version in order, from the first edition in 2000 to the present.

A baby mountain lion was spotted on a tree branch in the backyard of someone’s home in Santa Clarita. The cub, believed to be ...

From serene islands to magical waterfalls, some of most beautiful landscapes in the world strikingly reveal nature at its most dramatic & dreamlike.

Meet 33 innovative leaders who are using their voices and talents to tackle the planet’s most pressing issues. For decades, the Congo Basin was largely invisible to climate science. Now, a new ...