In the GO3 Project students at more than 100 schools in 25 countries around the world measure air pollutants and upload their data to a public database for graphing and display on Google Earth. Ground level ozone is measured in the Global Ozone Project, black carbon or "soot" is measured in the Black Carbon Experiment, and the greenhouse gas carbon dioxide is measured in the CO2 Project. In our newest project, GO3 Treks, students carry out "treks" of their own design to test hypotheses about sources and distributions of the primary pollutant black carbon and the secondary pollutant ozone. Together, GO3 students are learning and practicing the science of atmospheric chemistry, building the world's first citizen database for air pollutants, and proposing solutions to global environmental problems.

Global Ozone Project

Black Carbon Experiment

CO2 Experiment

GO3 Treks

Join the Global Network of Schools Measuring Ground Level Ozone

Although ozone in the stratosphere protects us from harmful UV rays from the sun, ozone at ground level causes serious health effects such as asthma and damages crops and ecosystems. Ground-level ozone is formed in the atmosphere in the interaction of sunlight with volatile organic compounds (VOCs) and oxides of nitrogen (NOx) emitted by automobiles and industrial processes. Because of its toxicity, ozone is regulated by the Environmental Protection Agency as one of six Criteria Air Pollutants.

Visualize and Measure Black Carbon Inside and Outside Your School

Black carbon or "soot" is the second leading cause of global warming and is estimated to be responsible for ~20% of the global warming and ~40% of glacier melting that has occurred to date. Because black carbon remains in the atmosphere for only about two weeks on average, control of black carbon emissions has been identified as the most cost effective way for slowing climate change in the near future. Black carbon also has serious health effects, including asthma and lung cancer.

Measure CO2 at Your School and Share Your Data with the World

Carbon dioxide, the product of combustion of all biomass and fossil fuels, is the most important greenhouse gas. Average carbon dioxide levels in the atmosphere have increased from 280 ppm to more than 400 ppm over the past century and are expected to double within a few decades. There is now a consensus among atmospheric and climate scientists that these increased levels of carbon dioxide have already begun to result in climate change with increases in surface temperatures and extensive glacier melting.

Explore the Sources and Levels of Air Pollutants in Your Community

In this exciting project, students use personal monitors to measure the primary pollutant black carbon and the secondary pollutant ozone along "treks" they design and carry out. Based on the provided curriculum, students form and test their own hypotheses about where these two pollutants are expected to have high and low concentrations. The treks are displayed on Google Earth in a blog format where they discuss their results with other students, teachers and scientists around the world.