Only young growing trees absorb much CO2, paper cups are made from farmed plantations of young fast growing trees. The best thing (from a CO2 point of view) wou

Only young growing trees absorb much CO2, paper cups are made from farmed plantations of young fast growing trees. The best thing (from a CO2 point of view) would be to cut down old growth hardwood rain-forest and plant pine saplings which you then cut down and make into cups which you bury! ps Actually about 75% of CO2 is absorbed by algea, it's the oceans that make oxygen not rainforests