For the first time, scientists have been able to measure the amount of water that rises and falls annually in the Amazon River floodplain. The result -- 285 billion metric tons, or 285 cubic ...

It is tempting to think that some materials are always heavier than other materials. For example, someone might say that metal is heavier than air. But it depends on how much of each material there is ...

In-cylinder charge motion plays a key role in optimizing the combustion process of modern reciprocating engines. The present paper describes a method for obtaining the volumetric, isothermal, ...

Journal of Experimental Botany, Vol. 40, No. 219 (October 1989), pp. 1069-1078 (10 pages) The minute changes in volume of a grape berry which occur from hour to hour were measured non-destructively in ...