CarbonFeed takes your most recent 200 tweets and turns them into a minute loop, a song that changes over your Twitter lifetime. Every time you tweet you generate 0.02g/C02 [1]. Don’t worry too much though. Listening to your one-minute song will eat up roughly 2.86 grams/C02e in electricity, servers, and embodied computer emissions [2].

[1] http://carbonfeed.org
[2] Mike Berners-Lee. How Bad Are Bananas?: The Carbon Footprint of Everything. Greystone Books. 2011.