Water use

Rainforest and atmosphere interact to create a uniform layer of “popcorn” clouds as a result of transpiration.

Jeff Schmaltz, NASA

  • Agriculture II Featured Photo Gallery Agriculture II Agriculture II

    Humans began to cultivate food crops about 10,000 years ago. Prior to that time, hunter-gatherers secured their food as they traveled in the nearby environment. When they... More »

  • Drought in Eastern Africa Featured Article Drought in Eastern Africa Drought in Eastern Africa

    More Frequent Drought Likely in Eastern Africa The increased frequency of drought observed in eastern Africa over the last 20 years is likely to continue as long as... More »

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Drought in Eastern Africa Last Updated on 2011-01-29 00:00:00 More Frequent Drought Likely in Eastern Africa The increased frequency of drought observed in eastern Africa over the last 20 years is likely to continue as long as global temperatures continue to rise, according to research published in Climate Dynamics. This poses increased risk to the estimated 17.5 million people in the Greater Horn of Africa who currently face potential food shortages. Scientists from the U.S. Geological Survey and the University of California, Santa Barbara, determined that warming of the Indian Ocean, which causes decreased rainfall in eastern Africa, is linked to global warming. These new projections of continued drought contradict previous scenarios by the Intergovernmental Panel on Climate Change predicting increased rainfall in eastern Africa. This new research supports efforts by the USGS and the U.S. Agency for International Development... More »
Agriculture II Last Updated on 2010-12-28 05:29:10 Humans began to cultivate food crops about 10,000 years ago. Prior to that time, hunter-gatherers secured their food as they traveled in the nearby environment. When they observed some of the grains left behind at their campsites sprouting and growing to harvest, they began to cultivate these grains. From these humble beginnings agriculture began. More »
Colorado River water supply Last Updated on 2010-07-28 00:00:00 This curriculum module will look at the Colorado River water supply, climate issues and water extraction issues. We will study the data, the possible consequences to various user groups, and suggest solutions to adapt to and mitigate these changes. GOALS Students will see how a changed climate can impact urban development, food security, regional economies, international relations, as well as the natural environment. Students will be able to see how adaptation strategies and different from mitigation strategies and how these strategies can help minimize the impacts and make the Southwest region more sustainable. Part One Figure 1. NASA MODIS image of the Colorado River watershed.  Source: NASA The first part of the assignment is to become acquainted with the Colorado River watershed as shown... More »