Plants convert sunlight, water, and carbon dioxide into carbon compounds and oxygen. (treehugger.com)
The damaging effects of carbon dioxide emissions from tourism could eventually be eliminated if travelers paid just US$ 11 per trip, according to a new study. (sciencedaily.com)
Rising temperatures could extend the growing season in northern latitudes, and an increase in carbon dioxide in the atmosphere could benefit some crops by improving water efficiency. (sciencedaily.com)