26 Sep 2011:
Major Rivers Have Enough Water
to Sustain Growing Populations, Study Says
A new study says the world’s major river systems contain more than enough water to meet global food production needs
in the 21st century. Following a five-year study of 10 river basins — including the Nile,
Ganges, Andes, Yellow, and Niger — scientists with the Consultative Group on International Agricultural Research (CGIAR) found that the greatest water challenge facing the planet is not scarcity but the inefficient and inequitable distribution of water. “Huge volumes of rainwater are lost or never used,” said Alain Vidal, director of CGIAR’s Challenge Program on Water and Food. In regions of sub-Saharan Africa, he said, even “modest” improvements in rainwater harvesting could yield two to three times more food production. Elsewhere, regions in Asia and Latin America exist where food production could be increased by at least 10 percent, according to the report, which is published in the journal Water International
. According to a recent UN report, global food output will have to increase 70 percent by 2050
to feed a growing world population.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
Photographer Robert Wintner documents the exquisite beauty and biodiversity of Cuba’s unspoiled coral reefs. View the gallery.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.