ovary. so therefore there could not be an egg without an ovary and the chicken came before the egg. two giant things in science in one day on your show. >> back to the string theorists, though. how many of them are there out there? >> lots. many. now there are new papers coming out every day on the new theory of gravity. >> and, again, it's just that we have -- our makeup, we are attracted like magnets almost to the earth. >> think about it, like you have 1,000 christmas lights. jumble them all up, throw them on the ground and next year you go to untangle them. the energy you're using to untangle all the lights is the gravity that's keeping them all together. >> is it just me or -- i didn't get this. >> no. >> "off the radar" is the name of the segment. we've got to get you back on the radar, i do believe, chad. >> yeah, next week. >> quick break, we're right back.