The tipi gets a modern makeover — and sparks a bigger conversation

Does ancient cave art provide the clues to early human language?

Stop trying to find meaning in your kid's artwork

Britain gets serious about curbing plastic waste

Why Hawaii's hot lava is so awe-inspiring

Finnish artist creates life-like crocheted people

Mystery of the pyramids' alignment finally solved by simple shadow trick

Fabled 'Gate to Hell' really did kill people — and now we know why

It's time to tell 'senior citizens' to take a hike

Why are those Finnish Olympians knitting?

One day without plastic. Can you do it?

The tallest lighthouse in Oregon has a haunted history