The future of food

01-21-2012

John Vidal

By 2050 there will be another 2.5 billion people on the planet. How to feed them? Science's answer: a diet of algae, insects and meat grown in a lab

US tops global clean energy investment rankings

Mark Kinver

The US has regained top spot from China as the biggest investor in clean energy in 2011, according to global rankings.

The table, published in a report by the Pew Charitable Trusts, showed that US invested more than $48bn (£30bn) in the sector, up from $34bn in 2010.

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