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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.

Transcript

IRA FLATOW, HOST:

This is SCIENCE FRIDAY. I'm Ira Flatow. My next guest won the Nobel Prize in 2000 for his work on learning and memory, and he really needs no introduction as a neuroscientist. But there is another side to Eric Kandel that you may not know. He is an art collector, an historian of early 20th-century art in Germany and Austria, and he says he could have seen that passion as an alternate career path.

The film director James Cameron has just completed a dive to Challenger Deep, the deepest point on Earth at nearly 36,000 feet under the sea. His manned descent is the first in 52 years, since the oceanographers Don Walsh and Jacques Piccard explored the Mariana Trench in the bathyscaphe Trieste.

With $540 million (wait — it just went up to $640 million!) on the line, it's not surprising that Alabama resident Lance Larka is willing to drive across the state line for a chance to win the record Mega Millions jackpot.

In the sign of the bigger cultural struggle in a post-Mubarak Egypt, a court has ordered the government to ban pornographic Internet sites.

One of the big questions facing Egypt now that Hosni Mubarak's 30-year rule has ended is what kind of role religion will play in the new government. Some of the Islamists who control parliament have expressed that they would like the country ruled by sharia.

Republican Congressman Todd Young helped draft Rep. Paul Ryan's 2013 budget that passed in the House of Representatives on Thursday. Congressman Young speaks with guest host Jacki Lyden about the budget plan and Democrats' opposition to it, including calls that the plan would hurt programs like food stamps and Medicaid.