NPR News

The tombstone that marked the grave of Adolf Hitler's parents has been removed from an Austrian cemetery.

The BBC reports the decision was made to keep right-wing extremists from using the graves as a pilgrimage site. The AFP reports:

Any dog owner will tell you that they're a lot less stressed out when they're with their dog. Even at work. And now science agrees.

People who took their dogs to work in an office in Greensboro, N.C., had lower stress levels through the work day, as reported on self-reported test.

The employees who hadn't brought their dogs to work said their stress levels increased through the work day. So did the non-pet owners. But the dog owners said they stayed mellow as the day went on.

MasterCard and Visa have warned banks that a third party processor has experienced a data breach. In statement, both card associations acknowledged the breach and MasterCard said that law enforcement is involved and "is currently the subject of an ongoing forensic review by an independent data security organization."

Want to hear a joke about sodium hypobromite? NaBrO! Can science be the butt of a good joke? Ira Flatow and guests test the hypothesis in an annual April Fools' joke-a-thon. They share the best gags in the business. Sidesplitting or groan-worthy? You decide.

This mystery has plagued arachnologists for decades. William Eberhard and Daniel Briceno untangle the web question in a paper in the journal Naturwissenschaften. The answer has to do with spiders' oily, hairy legs.

In The Age of Insight: The Quest to Understand the Unconscious in Art, Mind and Brain, Nobel Prize-winning neuroscientist Eric Kandel writes of turn-of-the-century Vienna, where artists mingled with writers, scientists and physicians, and explains how the brain perceives a work of art.