How your home's odor could make you sick, and a new 3-D display for video chatting, and more...

Plus: Autism genome sequenced, and why female snails are no longer growing penises | Trouble viewing? Click here Female Sea Snails No Longer Growing Penises After Ban on Toxic Chemical Six years after the ban took effect, biologists report that snail populations are finally recovering. The Crux | How Your Home's Odor Could Be Making You Sick Odor molecules emitted by molds prove toxic to human cells. D-brief | 3-D Display Lets You Interact With Remote Objects A dynamic display transmits shapes and actions at a distance. Seriously, Science? | Mysterious Dancing Epidemic of 1518 What caused 400 people to dance in the streets, in some cases to death? D-brief | The Colors of Ancient Sea Reptiles, Reconstructed Fossilized skin allows scientists to add pigment to extinct animals. D-brief | Slug-Inspired Glue Can Heal a Broken Heart New adhesive could lead to less-invasive surgeries and faster healing. Why Some of Us Are Better at Math Than Others A child's innate number sense has implications for later math skills. HPV Vaccine Shows Dramatic Success Rates of the cancer-causing virus fell by half in recent years. Thirteen New Answers to an Age-Old Physics Puzzle Physicists discover new solutions to the difficult three-body problem. Autism Genome Sequenced New analysis shows the genetic underpinnings in unprecedented detail. Conquering Cat Allergy The mechanism behind the reaction has finally been figured out.  SUBSCRIBE NOW  GIVE A GIFT  RENEW NOW DISCOVER's new digital edition is now available for iPhone, iPad, iPod Touch, all Android devices, Windows 7, and Mac OS. A Paleo-artist Reconstructs Long-Lost Human Ancestors The Top 10 Science Stories of 2013 The Good and Evil History of Poisons