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Recent Discoveries

Recent Discoveries: Did Cosmic Dust Doom the Dinosaurs? A controversial study by researchers at the University of Florida and Carnegie Institution theorizes that space dust in Earth's…

DK Science: Geological Time

THE FOSSIL RECORDRADIOMETRIC DATINGFIND OUT MOREGeologists (scientists who study rocks) divide the time since the Earth was formed until today into chunks called periods. During the various…

Olympic Preview: Water Polo

First Olympic Appearance: 1900 by John Gettings and Mark Zurlo Related Links Olympics Overview 2012 Encyclopedia: Water Polo Although it…

transition elements

(Encyclopedia) transition elements or transition metals, in chemistry, group of elements characterized by the filling of an inner d electron orbital as atomic number increases. This includes the…

The Chemistry Place

Virtual ChemLab Interactive Periodic Table Conversion Calculator Chemistry Science Projects: Beginner Level Chemistry Science Projects: Intermediate Level…

Earth Sciences

Encyclopedia: Earth Sciences Science Projects Earth Planet Earth Ecology Plate Tectonics Paleontology Table of Geological Periods Evolution Prehistoric…

Math & Science

Biology Six Kingdoms of Life The Body's Systems Encyclopedia: Cells More… Earth Sciences Encyclopedia: Earth Sciences Ecology Paleontology…

Winter Olympics Memorable Moments: The 1980 U.S. Hockey Team

Cold war heroes Related Links 2014 Winter OlympicsIce Hockey Through the YearsEncyclopedia: Ice Hockey Memorable Moments The Miracle of 1960 More Memorable Moments…

DK Science: Mercury

FIND OUT MOREMercury is the planet closest to the Sun, and experiences scorching temperatures by day. But it has virtually no atmosphere to trap the heat, so is freezing at night. It is a…

fermium

(Encyclopedia) fermiumfermiumfûrˈmēəm [key] [for Enrico Fermi], artificially produced radioactive chemical element; symbol Fm; at. no. 100; mass no. of most stable isotope 257; m.p. 1,527℃; b.p. and…