“This figure shows worldwide emissions of carbon dioxide, methane, nitrous oxide, and several fluorinated gases from 1990 to 2010. For consistency, emissions are expressed in million metric tons of carbon dioxide equivalents. These totals include emissions and sinks due to land-use change and forestry.” – United States Environmental Protection Agency ... Read more about Global Greenhouse Gas Emissions by Gas, 1990-2010
“This figure shows concentrations of carbon dioxide in the atmosphere from hundreds of thousands of years ago through 2013, measured in parts per million (ppm). The data come from a variety of historical ice core studies and recent air monitoring sites around the world. Each line represents a different data source.” - United States Environmental Protection Agency ... Read more about Global Atmospheric Concentrations of Carbon Dioxide Over Time
What do Kampala and Rio de Janeiro have in common? At first sight, the capital of landlocked Uganda and the megacity on the Brazilian coast may appear very different, but they share more than meets the eye.