英语考研

In the United States, the need to protect plant and animal species has become a highly controversial and sharply political issue since the passage of the Endangered Species Act in 1973. The act, desig...

Many Americans harbour a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of the department of food science and nutrition at the University of Mass...

There are some each phenomena you can count on, but the magnetic field, someday is not of them. It fluctuates in strength, drifts from its axis, and every few 100,000 years undergo, dramatic polarity ...

Imagine a world in which there was suddenly no emotion-a world in which human beings could feel no love or happiness, no terror or hate. Try to imagine the consequences of such a transformation. Peopl...

The Carnegie Foundation report says that many colleges have tried to be all things to all people”. In doing so, they have increasingly catered to a narrow minded careerism while failing to culti...

We sometimes think humans are uniquely vulnerable to anxiety, but stress seems to affect the immune defenses of lower animals too. In one experiment, for example, behavioral immunologist (免疫学家...

The destruction of our natural resources and contamination of our food supply continue to occur, largely because of the extreme difficulty in affixing (把固定) legal responsibility on those who con...

British universities, groaning under the burden of a huge increase in student numbers, are warning that the tradition of a free education is at risk. The universities have threatened to impose an admi...

There's a simple premise behind what Larry Myers does for a living: If you can smell it, you can find it.Myers is the founder of Auburn University's Institute for Biological Detection Systems, the mai...

In the world of entertainment, TV talk shows have undoubtedly flooded every inch of space on daytime television. And anyone who watches them regularly knows that each one varies in style and format. B...