(Encyclopedia) Jaggar,Thomas Augustus, Jr., 1871–1953, American geologist and volcanologist, b. Philadelphia, Ph.D. Harvard, 1897. One of the team of U.S. scientists (1902) who surveyed the eruptions…
Why don't the oceans freeze? In the Arctic and Antarctic, they do. The ice cap at the North Pole is entirely over ocean; on the other hand, the ice is only a few feet deep. Oceans don't freeze…
WHAT CAUSES EARTHQUAKES? WHAT HAPPENS DURING AN EARTHQUAKE? WHERE DO MOST EARTHQUAKES STRIKE? HOW ARE EARTHQUAKES MEASURED? FIND OUT MOREEarthquakes are vibrations triggered by sudden rock…
MOUNT EVEREST, HIMALAYAS FACTFILE: ASIAFIND OUT MOREAsia is the world’s biggest continent and covers almost a third of the Earth’s land surface. The landscape includes the frozen tundra in the…
(Encyclopedia) EifelEifelīˈfəl [key], undulating plateau, W Germany, N of the Moselle River and E of the Ardennes. The Eifel forms the northwestern part of the Rhenish Slate Mts. and is a barren area…
by Mark Hughes There are more than 140 known moons throughout our solar system. Most are barren rock, while some have atmospheres, volcanoes, and maybe even oceans of liquid…
Lost Islands of the World Traveler's guide to deserted islands for when you really, really want to be alone by Borgna Brunner Coming Up Clipperton Island: Blue Lagoon and Pirate…
Lost Islands of the World Traveler's guide to deserted islands for when you really, really want to be alone by Borgna Brunner Coming Up Clipperton Island: Blue Lagoon and Pirate…
Impact craterDeath from spaceOther dinosaur extinction theoriesAbout 65 million years ago, at the end of the Cretaceous Period, the Earth was affected by major changes to its environment. Animal…
