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Food: The growing problem

World hunger remains a major problem, but not for the reasons many suspect. Nature analyses the trends and the challenges of feeding 9 billion by 2050.

Food: An underground revolution

Plant breeders are turning their attention to roots to increase yields without causing environmental damage. Virginia Gewin unearths some promising subterranean strategies.

Photons meet with three-way split

Method that generates photon triplets could be a boon for quantum information.

Food: The global farm

With its plentiful sun, water and land, Brazil is quickly surpassing other countries in food production and exports. But can it continue to make agricultural gains without destroying the Amazon? Jeff Tollefson reports from Brazil.

News briefing: 23–29 July 2010

The week in science.

Retraction recommended for enzyme-chip paper

Reactome array study should not have been published, says ethics committee.

Corrections

Ocean greenery under warming stress

A century of phytoplankton decline suggests that ocean ecosystems are in peril.

US charges scientist with economic espionage

Could publishing a paper make you a spy?

Food: Inside the hothouses of industry

Feeding the world is going to require the scientific and financial muscle of agricultural biotechnology companies. Natasha Gilbert asks whether they're up to the task.

Mouse pain study stirs debate

Canadian scientists vindicated after being accused of mistreating laboratory animals.

Notes from an excavation

Russell L. Ciochon and his team are in Indonesia investigating the geological source and age of one of the world's biggest caches of Homo erectus.

Consumer gene testing in the hotseat

A week of hearings sows uncertainty for the fledgling consumer genomics industry.

Freedom of spill research threatened

Scientists call for impartial funding and open data as BP and government agencies contract researchers.

A solar salamander

Photosynthetic algae have been found inside the cells of a vertebrate for the first time.