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Excess phosphorus is polluting our environment while, ironically, mineable resources of this essential nutrient are limited. James Elser and Elena Bennett argue that recycling programmes are urgently needed.
Ann Finkbeiner explains JASON, the autonomous group of academics that has been reporting to the US government on military matters for more than 50 years.
In ten years of operation, the unwieldy Department of Homeland Security and its science directorate have seriously underperformed, says Peter D. Zimmerman.
Concerns about antibiotics focus on bacterial resistance — but permanent changes to our protective flora could have more serious consequences, says Martin Blaser.
Paul Ginsparg, founder of the preprint server, reflects on two decades of sharing results rapidly online — and on the future of scholarly communication.
On the twentieth anniversary of the World Wide Web's public release, Oren Etzioni calls on researchers to think outside the keyword box and improve Internet trawling.
There could be unexpected consequences if greater understanding of disease genetics gives parents more choice in what they pass to their children, says David B. Goldstein.