Four new species of carnivorous killer sponges have been recently discovered. No, it's not the pllot to some cheap Hollywood horror movie the new sponge species was made by Lonnny Lundsten, a marine biologist at California’s Monterey Bay Aquarium Institute and two Canadian researchers. Lonny Lundsten joins us for today’s One on One segment to talk about what he and his colleagues found and what they’ve learned about these unique sea creatures. Also... We earthlings are lucky.  Between 2000 and 2013 at least 26 asteroids from space have hit the earth with the force of an atomic bomb, and three former astronauts tell us it's only by chance that one of them hasn't hit a large urban area. How can we avoid a catastrophe in the future?  We'll tell you what scientists have to offer. There's a new tool scientists have for understanding climate change from the past...including what led to the Ice Ages. We'll have these stories and more on this edition of VOA's Science, Health and Technology magazine, Science World!