Probably safe to say that Smith wonât have to go for the Bandana Bandit look when he shows up at one of Vonnâs World Cup events. Tiger Woods walks in the finish area of an alpine ski, womenâs World Cup super-G, in Cortina dâAmpezzo, Italy, Monday, Jan. 19, 2015.
Carbon dioxide is not a pollutant but a naturally occurring, beneficial trace gas in the atmosphere. For the past few million years, the Earth has existed in a state of relative carbon dioxide starvation compared with earlier periods.
Carbon dioxide, a greenhouse gas, is the main pollutant that is warming Earth. Though living things emit carbon dioxide when they breathe, carbon dioxide is widely considered to be a pollutant when associated with cars, planes, power plants, and other human activities that involve the burning of fossil fuels such as gasoline and natural gas.