Richard Alley on Earth's Biggest Climate Control Knob

Click here for a multimedia presentation of Richard Alley’s AGU talk.  (Credit: AGU) Scientists aren’t known for being the savviest of public speakers, but Penn State’s Richard Alley is that rare researcher who knows how to give a talk. Alley — who’s willing to sing, dance, and gesticulate vigorously to get a point across — gave a lecture about carbon dioxide to …