Pieter van der Zaag explains why irrigated areas expand only very slowly

In his interesting Viewpoint article in Water Alternatives, Bruce Lankford suggests that an African Green Revolution cannot come about without irrigation. But he does not convincingly explain why irrigated areas expand only very slowly.

Presentations online: Henry Darcy Lecture 2009 & Isotopes and tracers in hydrology

The presentations that were held at 5 November 2009 during the events «Henry Darcy Lecture 2009 & Isotopes and tracers in hydrology» are now online.

ICHARM Newsletters online

The newsletters of ICHARM, the International Centre for Water Hazard and Risk Management – operating under the auspicies of UNESCO and hosted by the Japanese Public Works Research Institute (PWRI) – are now online.

Summary of UN Climate Change Conference

IISD’s Earth Negotiations Bulletin reports on the UN Climate Change Conference (COP-15), that was held in Copenhagen, 7–19 December 2009.

Climate Change and Transboundary Waters

Global climate change will increase the risk of conflict over shared international freshwater resources. Treaties and other cross-border agreements can help reduce those risks, but existing agreements are inadequate for dealing with the impacts of climate change.

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