Robert Krulwich

If you care about the environment, if you're a good person, you try (in many little ways) to cut back, do with less, live more simply. But when nobody's watching, when you're feeling ...

You've heard, maybe, about "Simple Living"? It's what some people do, Gandhi-style, to simplify their lives. They shed possessions. They watch their carbon footprint. They choose to live with less. They have what they need, and that's enough.

What's the opposite of Simple Living? (Everything needs an opposite, right? Read ...

I got two books in the mail that, if they could have, would've poked, scratched and ripped each others' pages out. I don't know if Martin Gardner and Patricia Churchland ever met, but their books show that there are radically, even ferociously, different ways to think about science. Gardner died ...

Stanley Kunitz, one of our great poets, planted a spruce tree next to his house in Provincetown, Mass., and over the years that tree attracted some tenants, a family of garden snakes. I didn't know garden snakes climb trees, especially needly ones like a spruce, but they do.

Here's something ...

"I am going to withdraw from the world," says a snail in Hans Christian Andersen's tale The Snail and the Rosebush. "Nothing that happens there is any concern of mine."

In the fall, snails get cold. They sense the days getting shorter so they prepare for what's coming. ...

Snails getting ready for winter are natural carpenters. They construct doors, or maybe you'd call them walls, inside their shells. They do this without hammers, nails or cement. Ins...

Spies used them first, then the Air Force, then cops, then mischievous civilians; drones, for some reason, are what gawkers use to gawk. They're spy accessories. But not only spy accessories. Thanks to Jasper van Loenen, drones are about to expand their repertoire. The word "drone" is about to become ...

Whenever your cellphone is on, "They" know where you are, and I mean all the Theys — the spooks, the merchants, the drone pilots, the private detectives, probably even the Chinese. If you want your privacy, says artist/designer Adam Harvey, you can go to the back of your ...

When you see them on the beach, spinach-like plops of green sprawled on the sand, you'd never guess their teeny nervous systems are imprinted with beach-ness. They are the ultimate Beach Boys. For them it's always summer.

They don't look like it at first, but they are worms. Little, flat ...

Remember those frog transparencies from biology class? The ones in the textbook where you could lay the circulatory system on top of the digestive system on top of the skeleton system? Here's that same idea, updated and gently presented for kids, from a company called Tinybop. This time, the ...

Biologist Bernd Heinrich was in Zimbabwe, in the field, eyes down, looking for beetles, when for no particular reason he looked up and saw ... well, at first he wasn't sure what it was, so he stepped closer, leaned in, and there, painted on the underside of large protruding rock, ...

It's one of life's great mysteries ...

Four billion years ago, or thereabouts, organic chemicals in the sea somehow spun themselves into little homes, with insides and outsides. We call them cells.

They did this in different ways, but always keeping their insides in, protected from the outside world ...

...

What if — just maybe — we find extra-terrestrial life in the oceans of Europa, a little moon circling Jupiter? If we do, says writer Caspar Henderson, don't expect that oceanic alien to be very big. Or very scary. Or even very visible. Nothing like this ...

The "top ...

It's breathing, he thought. "All of a sudden I see a thing with a heartbeat."

John Nelson is a designer, well known for tracing complex weather patterns or cultural information on maps, so considering what he usually does, this was easy. NASA's Visible Earth team publishes pictures of our ...

His name is "Boulet." Just Boulet. He's French. He's had a blog for years and what we have here, as you will no doubt notice, is a rough French-to-English translation, but the words don't matter that much. This is a fantastic voyage, one of the coolest I've seen on the ...

Mosquitoes don't have a lot of time to do what they do. They land. They bite. They look for blood. Mosquito moms need that blood to feed their babies, which why only the females pounce. They know they're not welcome (Smack! Splat!) so they've got to be good at this; ...

Here's what the Swedish artist Oscar Reutersvard did. In 1934, he got himself a pen and paper and drew four cubes, like this.

Then he drew some more, like this.

And, then — and this is where he got mischievous — he drew one more set, like this.

He called ...

They dominated our planet for 130 million years. You can't do that without having babies, and to have babies, dinosaurs had to have sex. The mystery is — and this is still very much a mystery — we don't really know how they did it.

The key problems being:

First, ...

I don't know what this is, or what it cost this guy to do what he does to his knees, or to the top of his skull. I don't know what I'm listening to; I only know that what happens in this video is beautiful. And different. And worth sharing, ...

She was 34, on a trip to Europe, got sick from a flu or maybe it was a virus, had to lie down and stay in bed — for months and months. A friend brought her a snail. You might enjoy its company, she was told.

"Why, I wondered, would ...