This is SCIENCE FRIDAY. I'm Ira Flatow. Meet Flame, every PC owner's worst nightmare. This newly discovered malware gives an attacker remote access to your computer. It can listen in on your conversations, look through your webcam. It was first detected in the Middle East and has been infecting computers for at least two years.
Reporting in the journal Nature Communications,researchers write that they were able to track down the cells causing clogged arteries. Dr. Jill Helms, co-author on the study, discusses why stem cells are to blame and how the study could lead to more effective treatments.
Alan Alda challenged scientists to explain what a flame is to an 11-year-old. Three months and more than 800 entries later he is back with the winner of the contest. Ira Flatow and guests discuss the winning entry and why the contest was an effective exercise in science communication.