Counting birds for more than 100 years generates data on a changing climate and there’s an app for that: eBird. Surfer science using smart tech tracks ocean acidification and coastal temperatures in the Smartfin project. Spend “A Year in the Life of Citizen Science” with California's monarch butterflies and horseshoe crabs in Delaware.
Sensors on asthma inhalers generate real-time maps of environmental dangers to help patients in Louisville, KY. Street knowledge was crucial in a historic medical breakthrough: John Snow’s mapping of cholera in 19th c. London. In West Oakland, CA, citizens confront air pollution and rising asthma rates by collecting traffic data.
Citizen scientists and the Bucket Brigade track pollution at fracking sites in Wyoming and other states. On East Coast trout streams, fishermen and volunteers monitor water quality with TroutUnlimited. Philadelphia residents join with scientists to test their drinking water for lead. Chinese citizens expose environmental crimes.
20,000 volunteers across the U.S. measure precipitation and their data is used for life-saving alerts in extreme weather. Armchair mappers worldwide help first responders after the Nepal earthquake. EyesOnALZ enlists the crowd to speed up research on Alzheimer’s disease. DIY enthusiasts map and document the BP Oil Spill with kites, balloons and cameras.