منابع مشابه
China backs dam plans
were " enduring one form or another of water scarcity ". In spite of water manufacturing capacity doubling between now and 2016, up to half the world's population will still be suffering shortage by the middle of the century, according to the GWI. The cost of desalination is falling as a result of technological development, increasing the demand, and the cost of reusing water from sewage can be...
متن کاملBusiness backs the basics.
arlier this year, a number of leaders from major U.S. corporations gathered at Sunnylands in California to discuss the critical importance of basic scientific research. For decades, the private sector has withdrawn from some areas of basic research, as accelerating market pressures, the speed of innovation, and the need to protect intellectual property in a global marketplace made a Bell Labs–s...
متن کاملBoys' Backs
an unimportant amount of time bending over his desk, so that bad positions have not the opportunity of making more or less "staying" faults. But at this time a beginning may be made, either for good or bad. The boy may. be trained to sit correctly at his seat, especially when writing or drawing. lie may be trained to read with his book held before his eyes, not with the book flat upon the desk....
متن کاملTHE WHOLE DAM STORY: A Review of the China Yangtze Three Gorges Dam
Some marvel at these massive structures as engineering wonders that provide inestimable public benefit – things like flood control, water supply, hydroelectric power, improved navigation and water recreation. Yet others don’t share this appreciation and have doubts about the ability of humankind to effectively harness nature, particularly the power of the world’s mighty rivers. They decry the d...
متن کاملBacks to nature
" There's a perception that global warming is something that will happen smoothly into the future, but some of these ecosystems go into abrupt decline when warming reaches a certain threshold, " said Tim Lenton, an environmental scientist at the University of East Anglia, and lead author of the study. " If we know when the different tipping points are, we can use them to inform targets to limit...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Current Biology
سال: 2010
ISSN: 0960-9822
DOI: 10.1016/j.cub.2010.04.029