Celebrate Earth Day

今天是地球日，给大家推荐两本亲近自然的经典儿童读物吧。

蓝色海豚之岛 Island of Blue Dolphins (8-12 year olds)
http://www.houghtonmifflinbooks.com/catalog/titledetail.cfm?titleNumber=592387

我这边的山 My Side of the Mountain (8-12 year olds)
http://us.penguingroup.com/nf/Book/BookDisplay/0,,9780525463467,00.html