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Every few million years or so, the Earth burps up a gargantuan volcano.

These aren't like volcanoes in our lifetimes; these "super volcanoes" can erupt continuously for thousands of years. While they might be rare, you'd best look out when one hits.

The ash and volcanic gases from these volcanoes can wipe out most living things over large parts of the planet. Michael Thorne, a seismologist at the University of Utah, has some clues about what causes these big eruptions.

The champ has met its challenger.

Drop a cat and it will swing its head to a horizontal, rearrange its rear, arch its back, splay its legs, and — amazingly often — land on its feet.

This is what cats do. They're famous for it. But now they have a rival.

This is an aphid.

Aphids spend their days sucking sap from leaves. Those leaves can be high off the ground. "High" of course, being a relative term, but think of it this way: Five feet high up is 381 aphids tall. Which is why things get so dicey when a ladybug comes by.

You're in the car, cruising along the highway and thinking about that great Morning Edition piece you heard today, when you wonder, "Was that the NPR logo on that billboard?" If you are in San Diego, Dallas/Ft. Worth, Indianapolis, or Orlando – it just might have been.

Between January and April, NPR and Member Stations KPBS, KERA, WFYI, and WMFE are testing out a new visibility campaign that may eventually go nationwide.