Further Reading

R. Kwok. “Iron versus climate change.Science News for Students. Aug. 9, 2012.

S. Ornes. “Sea changes.Science News for Students. April 7, 2011.

A. Biskup. “Global warming and the greenhouse effect.Science News for Students. April 11, 2013.

S. Ornes. “Dirty clouds change rainfall.” Science News for Students. Nov. 30, 2011.

S. Ornes. “Sudden big chill.” Science News for Students. Feb. 28, 2012.

Teacher's questions: Questions you can use in your classroom related to this article.