Every parent knows Brontosaurus, and every kid knows that it's now called Apatosaurus. Some of the most awe-inspiring skeletons at a natural history museum are the sauropods.

Matt Wedel, a sauropod specialist, is a kind of reverse-chiropractor for dinosaurs. While back-crackers twist and turn your spine to release pockets of air in between your vertebrae, Wedel and his colleague Michael Taylor are all about discovering the air spaces inside dinosaur backbones.

A new study from the PLOS ONE journal reveals that overheard cell phone conversations are more irritating and distracting than a dialogue between two people nearby.