Former º£½ÇÉçÇø science correspondent, award-winning TV journalist and author Ira Flatow is the host of the the weekly radio show, . Dean Regas, outreach astronomer and assistant director with the , is co-host of the popular PBS series, . Each of them present the amazing world of science, what goes on and why, here on Earth and out in space, to millions of people each year. And today Ira Flatow and Dean Regas are here to share a bit of scientific knowledge with us.