How Often Should You Wash Your Bedsheets?

If you were presented with a pile of fungi, bacteria, mold, soil, crumbs, dander, bodily fluids, dead skin cells, dust mites and excrement, you probably wouldn't want to hop in and roll around. However, that's exactly what many people unwittingly do every time they climb into bed.See more

Most Scientists Agree Another Pangaea Is Certain, Disagree How It Will Look

The smaller continents that once made up Pangea were driven apart by the same phenomenon that had united them in the first place: plate tectonics. So was this a one-time thing or could it happen again in the geological future? See More

10 National Parks to Visit in the Winter

Did Religions Arise from Our Misunderstanding of Human Consciousness?

The Case for Kids Walking to School by Themselves

Back in 1969, 48 percent of kids in America walked or biked to school, compared with a paltry 13 percent in 2009. But they're losing a lot by not doing this. Research out of the University of Granada in Spain indicates that kids should commute independently, when possible, to reap some pretty significant benefits. See more >>