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Anatomy and
Physiology: The Heart

The HeartAnatomy and PhysiologyThe HeartAnatomy of the HeartThe Four ChambersThe Heart's Own BloodECG: Measuring a Beat Valentine's Day, at least the greeting card variety, has forever done the…

Cheops' Pyramid

The Question: What are the dimensions of the Great Pyramid Of Cheops? The Answer: Cheops' Pyramid, one of the Seven Wonders of the Ancient…

Global Food Crisis

Food shortages and price increases spark violence and debate by Mark Hughes Food shortages have been reported worldwide. Related Links Year of the Potato…

DK Science: Energy Waves

OCEAN WAVESBIOGRAPHY: HEINRICH HERTZ German, 1857-1894ELECTROMAGNETIC SPECTRUMSEISMIC WAVESFIND OUT MOREMany different kinds of energy travel in waves. Sound waves carry noises through the air to…

The Dimensions of the Bowling Lane

The Question: On your Standard Measurements in Sports page you left out the lane width of the bowling lane. Can you tell me what it is? The…

The Fastest Fish in the Sea

The Question: I read the list of the fastest animals on land at your site. But I was wondering what is the fastest animal in the sea might be? The Answer…

The Largest Ship in the World

The Question: What is the largest ship afloat today in the world? The Answer: The largest ship afloat today is the oil tanker Jahre Viking (…

DK Science: Conservation

RECREATING THE QUAGGABIODIVERSITYFIND OUT MOREWildlife conservation is becoming increasingly important. Not many animals can evolve quickly enough to survive human-induced change, and few…

Space Fungus

by David Johnson   Even though spacecraft are thoroughly sanitized, scientists have been startled to learn that some 250 species of bacteria and fungi can live and…