News tagged with drought
La Nina going away, but too late for Texas drought
(AP) -- Federal weather forecasters say the La Nina weather phenomenon that contributed to the southwestern U.S. drought is winding down.
Feb 09, 2012 |
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A new tool for mapping water use and drought
Farmers and water managers may soon have an online tool to help them assess drought and irrigation impacts on water use and crop development, thanks to the work of two U.S. Department of Agriculture (USDA) ...
Feb 08, 2012 |
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Dry conditions spurred advanced photosynthesis
The need to conserve water played a vital role in driving plants to evolve a specialised form of photosynthesis, scientists have shown.
Feb 03, 2012 |
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Extreme droughts could increase by 15 percent in Spain by the middle of the century
A team at the Polytechnic University of Cartagena has designed a new method for calculating drought trends. Initial results suggest that by the year 2050 there could be a 15% increase compared to the droughts ...
Jan 26, 2012 |
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Ancient lessons for a modern challenge
What caused the collapse of the Cambodian city of Angkor, the largest preindustrial city in the world, 600 years ago? Previous research suggests war and overexploitation of the land were to blame, but a new ...
Jan 23, 2012 |
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Drought returns to Sahel, bringing hunger
(AP) -- For the third time in the past decade, drought has returned to the arid, western shoulder of Africa, bringing hunger to millions. Aid agencies are warning that if action is not taken now, the region known as the ...
Jan 22, 2012 |
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Ecologists call for screening imported plants to prevent a new wave of invasive species
A recent analysis led by ecologist Bethany Bradley at the University of Massachusetts Amherst suggests that climate change predicted for the United States will boost demand for imported drought- and heat-tolerant ...
Jan 04, 2012 |
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Scientists develop drought-tolerant alfalfa
With much of the Southwest struggling with drought, many ranchers and dairy farmers are having difficulty finding enough hay for their livestock and making tough choices: pay up to twice as much as last year and ship it in ...
Jan 03, 2012 |
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Possible new explanation found for sudden demise of Khmer Empire
(PhysOrg.com) -- The Khmer Empire, known to many as the Angkor Civilization, was a society of people that lived for several centuries in Southeast Asia in what is now Cambodia, Thailand, Laos and Viet Nam. ...
Jan 03, 2012 |
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Unnatural disasters
Global wildlife is facing an unprecedented threat from natural disasters exacerbated by climate change, warn scientists in a paper published in Trends in Ecology and Evolution.
Dec 23, 2011 |
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Producers need to watch margins during economic uncertainty
Farmers will need to manage margins closely in 2012 as commodity prices fluctuate with U.S. and European economic developments, according to a Texas AgriLife Extension Service economist.
Other Sciences / Economics & Business
Dec 21, 2011 |
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Scientists forecast crops that adapt to changing weather
Crops that can cope with sudden fluctuations in the weather could be developed, thanks to fresh discoveries about the survival mechanisms of plants.
Dec 13, 2011 |
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The case of the dying aspens
Over the past 10 years, the death of forest trees due to drought and increased temperatures has been documented on all continents except Antarctica. This can in turn drive global warming by reducing the amount of carbon dioxide ...
Dec 12, 2011 |
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Waiting on climate is 'escapism': top UN scientist
Leaders who wait for further evidence about the perils of greenhouse gases are flirting with escapism, the head of the UN's Nobel-winning climate scientists says.
Dec 08, 2011 |
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Skiers welcome snow to Swiss slopes
Swiss ski enthusiasts are breathing a sigh of relief after heavy snow finally hit the slopes, kicking off the winter season in earnest.
Dec 07, 2011 |
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Drought
A drought is an extended period of months or years when a region notes a deficiency in its water supply. Generally, this occurs when a region receives consistently below average precipitation. It can have a substantial impact on the ecosystem and agriculture of the affected region. Although droughts can persist for several years, even a short, intense drought can cause significant damage and harm the local economy. This global phenomenon has a widespread impact on agriculture. The United Nations estimates that an area of fertile soil the size of Ukraine is lost every year because of drought, deforestation, and climate instability. Lengthy periods of drought have long been a key trigger for mass migration and played a key role in a number of ongoing migrations and other humanitarian crises in the Horn of Africa and the Sahel.
For more information about Drought, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
