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praseodymium

(Encyclopedia) praseodymiumpraseodymiumprāˌzēōdĭmˈēəm, –sēō– [key] [Gr., =green twin], metallic chemical element; symbol Pr; at. no. 59; at. wt. 140.90765; m.p. 931℃; b.p. 3,512℃; sp. gr. about 6.8;…

Least and Most Polluting Cars, 2008

The ACEEE's Green Book®, a buyer's guide to environmentally friendly passenger vehicles, rates cars according to their emissions and fuel consumption, and publishes an annual list of the “greenest”…

Least and Most Polluting Cars, 2009

The ACEEE's Green Book®, a buyer's guide to environmentally friendly passenger vehicles, rates cars according to their emissions and fuel consumption, and publishes an annual list…

Least and Most Polluting Cars, 2010

The ACEEE's Green Book®, a buyer's guide to environmentally friendly passenger vehicles, rates cars according to their emissions and fuel consumption, and publishes an annual list…

The Masters 1999

A Preview of the 1999 Masters Tournament by Gerry Brown Mark O'Meara and Tiger Woods, the last two golfers to win the green jacket, survey Augusta during a practice round for the 1999…

DK Science: Algae

FOREST OF KELPTYPES OF SEAWEEDALGAL OVERKILLPHYTOPLANKTONFIND OUT MOREAlgae are simple organisms that make food from sunlight by photosynthesis, but lack the roots, stems, and leaves of proper…

Hamsters

Hamsters How to Care for Hamsters Hamsters were living in relative obscurity until just 70 years ago, when a zoologist discovered a family of these rodents in the Syrian desert. Today,…

Seuss Biography

The beloved author of more than 46 children's books by Borgna Brunner   Related Links Dr. Seuss Quiz Seuss on Broadway Grinchy Trivia…

Lyon, Mary

(Encyclopedia) Lyon, MaryLyon, Marylīˈən [key], 1797–1849, American educator, founder of Mt. Holyoke College, b. Buckland, Mass. She attended three academies in Massachusetts; later she taught at…

Richardson, Henry Handel

(Encyclopedia) Richardson, Henry Handel, pseud. of Ethel Richardson Robertson, 1870–1946, Australian novelist, b. Melbourne. Her years of study at the Presbyterian Ladies' College, Melbourne, were…