Who Discovered DNA? explores the fascinating advances that have been made in the study of DNA and genetics.

Describes the physical characteristics and probable behavior of this herbivorous dinosaur with spiked thumbs.

" Discusses heat waves, where they are common, how they affect us, and how people cope with heat waves"--Provided by publisher.

Describes the origins and development of customs associated with Easter and spring. Includes activities, games, recipes, and poems.