Author Kenneth Green explores the complex issue of global warming in a way that makes this complex topic understandable for young readers. This book tells how researchers measure the earth's temperature and compare it with temperatures from centuries ago.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.