At the annual SXSW Eco, a conference in Austin, Texas, you'll find a lot of serious discussion of the rapid decline of the Earth's ecosystems.
But like the famed music, film and interactive parent festival, SXSW, this event is also about networking. That means parties. Lots of them. People shake off formalities easily here, and the young, casual, tech-oriented crowd takes full advantage of Austin's tantalizing buffet of food trucks, bars and music.