The iPad has been steadily becoming more entrenched in the medical community, but maybe in no more fun way than this new app from researchers at the Universities of Glasgow and Bristol. The app links your iPad to "optical tweezers" that use lasers to manipulate microscopic particles. The interface is familiar—pinch to zoom, tilt to move around—but instead of slicing fruit you're taking part in a molecular biology revolution. [Eurekalert via PopSci]