More than 300 rivers drain into Siberia's Lake Baikal, which holds 20 percent of the world's fresh water, more than all the North American Great Lakes combined.
That educators have not anticipated the impact of microcomputer technology can hardly be said that it is their fault: Alvin Toffler, one of the most prominent students of the future, did not even mention microcomputers in Future Shock, published in 1970.
A leading figure in the Scottish Enlightenment, Adam Smith’s two major books are to democratic capitalism what Marx’s Das Kapital is to socialism.
The Olympic Games helped to keep peace among the pugnacious states of the Greek world in that a sacred truce was proclaimed during the festival’s month.
Hundreds of species of fish generate and discharge electric currents, in bursts or as steady electric fields around their bodies, using their power either to find and attack prey, to defend themselves, or also for communicating and navigating.
While all states face similar industrial waste problems, the predominating industries and the regulatory environment of the states obviously determines the types and amounts of waste produced, as well as the cost of disposal.
Rivaling the pyramids of Egypt or even the ancient cities of the Maya as an achievement, the army of terra-cotta warriors created to protect Qin Shi Huang, China’s first emperor, in his afterlife is more than 2,000 years old and took 700,000 artisans more than 36 years to complete.
In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.
When Congress reconvenes, some newly elected members from rural states will try and establish tighter restrictions for the amount of grain farmers are to be allowed to grow and to encourage more aggressive sales of United States farm products overseas.
Thomas Eakins's powerful style and his choices of subject-the advances in modern surgery, the discipline of sport, the strains of individuals in tension with society or even with themselves-was as disturbing to his own time as it is compelling for ours.
Over 75 percent of the energy produced in France derives from nuclear power, while in Germany it is just ...
The amount of time it takes for most of a worker's occupational knowledge and skills to become obsolete ha...
Which of the following most logically completes the argument below?According to promotional material published by the ci...
The cost of each adult's ticket for a certain concert was $30, and the cost of each child's ticket for the concert was $24. If Hannah purchased tickets for this concert, what was the average (...
In the past several years, astronomers have detected more than 80 massive planets, most of them as large or&nb...