Global warming is caused by a variety of factors, but perhaps the most critical contributing factor is the carbon dioxide that has been released slowly to the atmosphere for the past 400,000 years. The Industrial Revolution at the turn of the 20^th century greatly increased

Carbon offsetting is a relatively new trend in mitigating greenhouse gas emissions, and unlike in greenhouse reduction, the long and the short of it is this: you have to pay for your greenhouse gas emissions with a little tree planting after a business travel or a vacation in Morocco