Topic: Nitrous Oxide

(James Balog/Extreme Ice Survey via AP) (AP)

Nitrous oxide concerns

Brian Kahn - Climate Central
(<a href='http://www.shutterstock.com/gallery-87573p1.html'>Ivonne Wierink</a> via <a href='http://www.shutterstock.com/'>Shutterstock</a>)

Appetite for destruction

Samuel Blackstone
(<a href='http://www.shutterstock.com/gallery-105328p1.html'>Joshua Resnick</a> via <a href='http://www.shutterstock.com/'>Shutterstock</a>/Salon)

Larry Schwartz - Alternet