Air Quality Impacts: Along with greenhouse gases, other pollutants are released into the air during oil sands operations. These pollutants are harmful to the environment and human health, and include gases such as NOx and SOx.
Consider a time when mars is in the middle of one of its periods of apparent retrograde motion. during this time, mars appears <u>brightest</u> in our night sky and crosses the meridian around <u>midnight</u>.
