scientific american - 2000 02 - galileo finds fire and brimstone on jupiter''s moon io

... the con- centration of helium that the Galileo at- The Galileo Mission to Jupiter and Its Moons Scientific American February 2000 45 The Infernal Moon Io A yummy pizza color dis- tinguished Io in ... child labor and guarantee the right to unionize. It wants protection against WTO actions that infringe on U.S.environ- mental laws and more transparency in the operation of W...

Ngày tải lên: 12/05/2014, 16:01

... water, soil and air pollution; higher human morbidity resulting from air pollution; farmland loss because of construction and erosion; nutrient loss and ßooding caused by erosion and deforestation; and ... population growth to produce environmental dam- age. This phenomenon can contribute to economic deprivation that spurs in- surgency and rebellion. In the Philip- pines, Spanish...

Ngày tải lên: 12/05/2014, 14:48

... preferred by surf -and- turf reactions, so, too, varying proportions of oxygen and carbon are engaged through the formation and consump- tion of organic matter. In addition, car- bon is quite reactive ... ex- penditure marked the culmination of the 50-year competition with the Soviet Union, a period during which escala- tion on one side provoked reciprocal moves on the other, even aft...

Ngày tải lên: 12/05/2014, 14:50

... population problem. The importance of gender inequality to overpopulation in poor nations is fortunately gaining international recog- nition. Indeed, the United Nations Con- ference on Population and ... World Bank on sub-Saharan Africa have revealed posi- tive correlations among poverty, fertility and deterioration of the local environ- ment. Such data cannot reveal causal connection...

Ngày tải lên: 12/05/2014, 15:00

... undernutri- tion. The immediate expense of nutri- tion programs and broader interven- tions should be considered a critical in- vestment in the future. Malnutrition al- ters educational preparedness and, later, ... (above) was one of four towns where chil- dren and pregnant women re- ceived nutritional supplements. Copyright 1996 Scientific American, Inc. nutrition, poverty and edu...

Ngày tải lên: 12/05/2014, 15:04

... larger tilt-rotors (preliminary designs have already been sketched for 1 9-, 3 1-, 3 9- and 75-pas- senger craft) and new federal regula- tions governing the certification and op- eration of tilt-rotors ... fusion burn. For a decade, scien- tists behind the International Thermo- nuclear Experimental Reactor (ITER) —a $10-billion multinational project —have argued that ITER would d...

Ngày tải lên: 12/05/2014, 15:20

... du- plication and other “wasted” investment is contrary to chaos in a friction-free economy, because chaos generates inno- vation and opportunity. Emergent be- havior drives new businesses and ... were once thought of as uniquely avian innovations —such as light, hol- low bones, long arms, three-fingered hands with a long sec- ond finger, a wishbone, a backward-pointing pelvis, and long...

Ngày tải lên: 12/05/2014, 15:33

... seeing so-called charge-parity (CP) violation in B mesons. Previously, the violation had been seen only in K mesons. Research- ers should gain a better sense of this strange phenomenon when Stanford University’s ... energy would be gravitational. Grav- ity would pull material toward the dwarf or neutron star, and the energy of motion would be converted to heat and radiation during collisi...

Ngày tải lên: 12/05/2014, 15:53

... of air-conditioning and the success of the civil-rights movement also contributed to the rise of the South. A major exception is a band of counties with a high concentra- tion of African-Americans, ... coun- try’s monetary policies (the supply of money available and changes in national interest rates) and fiscal policies (taxation and federal budget considerations). Ac- cording to the...

Ngày tải lên: 12/05/2014, 16:01

... a $10-billion collaboration begun in 1986 by the U.S., Russia, Eu- rope and Japan, was to be the first toka- mak to achieve a self-sustaining fusion burn. Skeptical of the design and con- cerned ... affirmative action,the pro- portion of blacks, Hispanics and Na- tive Americans graduating from col- lege is still much smaller than that of whites and Asians.The proportion of white non-His...

Ngày tải lên: 12/05/2014, 16:01