Police and scientists investigate an outbreak.

On the “world’s largest social network that you probably haven’t yet heard of” and its enigmatic founder.

Inside the most ubiquitous distraction of its era.

Albert Talton started with some recycled newsprint and a cheap printer from Staples. By the end, he’d put more than $7 million into circulation.

Foursquare and Gowalla are in a VC-funded race to become the dominant location-based social network. But their founders say both companies have a larger purpose.