Burning Questions

The towering Alerce Milenario may be more than 5,000 years old, but it's just one of several contenders for the title.

From a flightless giant heavier than a polar bear to a super-glider with a 24-foot wingspan, avians ancient and modern compete for the crown.

Well, yes. And no. Actually, it depends on where you stand, in more ways than one.

And what does hard mean, anyway?

The secret of the slide, from ancient Germanic tribes to tony Alpine resorts.

How a local tradition has hung on for centuries.

And why does it need to "snap"?

And what does it have to do with lawyering?

A tale of a botanical mystery, colonialism, and savvy marketing.

There's a whole lot we don't know about vision and speech perception.

How a fusion of at least four cuisines created a beloved and misunderstood dish.

A close look at a strangely global idiom about how little we understand each other.

Arbitrating when to say ref, ump, or judge.

Very, but the story of sea level rise is a lot more complicated than that.

No one can seem to agree.

Fish and dairy can make for a delicious mix, despite popular belief.

An investigation into how three snacks became associated with madness.

And other impossible questions.