Depending on how long you took and what sites you visited, your search caused the emission of one to 10 grams of carbon into the atmosphere, contributing to global warming.

Sure, it’s not a lot on its own — but add up all of the more than one billion daily Google searches, throw in 60 million Facebook status updates each day, 50 million daily tweets and 250 billion emails per day, and you’re making a serious dent in some Greenland glaciers.