Earth and Space

 


901

to Guidelink arrow

to Videolink arrow

Acid Rain

Acid rain is considered by many people to be one of the most serious environmental problems of our time. It is a global problem that is gradually affecting our world. The term acid rain was coined b …


1027

to Guidelink arrow

to Videolink arrow

Air Pressure

Even though we can't feel it, air is constantly pressing down on us with a tremendous force -- 14.7 lbs. per square inch (100,000 newtons per square meters), to be exact! This was graphically demon …


1029

to Guidelink arrow

to Videolink arrow

Antarctic Palmer Station

Antarctica is a six million square-mile area locked in an ice age. Its waters team with more life than a tropical rain forest, and its coast plays host to some of the most magnificent animals in the …


1028

to Guidelink arrow

to Videolink arrow

Antarctic Weather Gear

Exploration of new or rarely-explored frontiers often requires remarkable courage, determination, and endurance. These characteristics, as well as others, were needed by the early explorers of the co …


3078

to Videolink arrow

Antarctic Wildlife


3002

to Videolink arrow

Arctic Travel


3003

to Videolink arrow

Arctic Weather


1031

to Guidelink arrow

to Videolink arrow

Aurora Borealis

Folklore is rich with explanations for the stunning night-sky lights, the aurora borealis. Various cultures have explained them as dancing spirits or blood raining from the clouds. Aurora was the Ro …


1156

to Guidelink arrow

to Videolink arrow

Black Holes

Suppose you go outside and throw an apple straight up into the air. The Earth's gravity slows the upward speed of the apple until it finally stops--and then starts falling back down. But suppose you c …


3009

to Videolink arrow

Blue Seas


[First Page] [Prev] Showing page 1 of 4 pages [Next] [Last Page]