About 3,000 years ago, however, correct ideas also began to appear. The Chal-deans were the first to note, on the basis of observation of lunar eclipses, that the earth is spherical. Pythagoras, Parmenides (sixth and fifth centuries B.C.), and Aristotle (fourth century B.C.) tried ...
This vessel is thought to have left the planet Earth some 50,000 years ago. Some have speculated that the crew of this craft may have populated the nearby human worlds of Rann, Thanagar and Krypton.[citation needed] 48,000 BCEVandar Adg (Vandal Savage) was a caveman and leader of the ...
and they have made many bicycles with these materials to protect the earth. There are also some people who have planted a large number of trees on the earth using tree species, making the environment of the earth look like it was 1000 years ago. ...
Earth science—Hard-cored continents - Nyblade - 2001 () Citation Context ...ales of thousands of kilometers, but there is significant scatter on scale lengths <1000 km. Do the seismic and the mechanical thickness covary on these length scales, as assumed in many studies [see =-=Nyblade,...
The Chinese made a bamboo bridge over the Min River in Sichuan, China almost 1,000 years ago. 4 Also, bamboo is still used to make houses today, especially in China and Philippines. As a part of history, bamboo is very important. The great scientist Thomas Edison did not invent the ...
Redwood trees are the tallest plants on the earth,reaching heights of up to 100 meters.They are also known for their longevity,typically 500 to 1000 years,but sometimes more than 2000 years.A hundred million years ago,in the age of dinosaurs,redwoods were common in the forests of a much ...
However, the lower tsunami deposit was probably deposited 700–1000 years ago, which is consistent with the age range of the paleotsunami reported for Yaeyama Islands. Because sandy tsunami deposits found in this and earlier studies are thick and deposited at high elevation and far inland, ...
(1000 simulations for each ecosystem).cCorresponding distributions.dDistribution of the CO:CH4ratio for each scenario.eDistribution of the surface temperature in each scenario. The white dots ind,erepresent the median of the distributions, the thick gray lines the interquartile range, and thin gray...
Using a dynamic model we have calculated the zonal average climate forced by mean insolation conditions that prevailed 10,000 and 25,000 years ago, keeping... B Saltzman,AD Vernekar - 《Journal of Geophysical Research》 被引量: 51发表: 1971年 Historic Tsunami in Britain since AD 1000: A ...
About 1000 years ago the islands were settled by Polynesians(波利尼西亚人).Englishman Captain James Cook led the first group of Westerners there in 1778.Native Hawaiians have special culture and languages.Although nowadays English is the official language of Hawaii,folk music and dancing are ...