"First American edition published under the title e.encyclopedia science, in 2004"--T.p. verso. "A fact-packed reference book plus links to safe, homework-helpful Web sites"--P. [1] of cover. "The dk online science encyclopedia has its own Web site, created by DK and Google"--p. 6. "Google." Includes index.

Matter and materials -- Forces and energy -- Electricity and magnetism -- Space -- Earth -- Plants -- Animals -- Human body.