News A container reportedly used to transport cobalt-60 was found in a truck in the town of Hueypoxtla

Officials have begun the delicate task of recovering a stolen shipment of highly radioactive cobalt-60 abandoned in a field in central Mexico.

<i>IoS</i> letters, emails & texts, 2 August 2008

Feargal Sharkey makes an emotive appeal on behalf of session musicians ("Noises Off", 27 July), but the main beneficiaries of any copyright extension, as always, will be the record companies. When he talks of session musicians' rights being "bought out" at the time of recording, this usually means they are assigned to a record company in exchange for a sum of money. It is the record company that benefits from future airplay.

Sean O'Grady: A missed chance to give world a tax cut

Are they dead or just resting on their perch? The collapse of the world trade talks is easily dismissed as one of those great diplomatic routines, an annual ritual of late nights, sweaty, exhausted trade ministers trading the odd insult, in between wrangles about banana quotas. "Make or break" negotiations collapse in a red-eyed heap on the conference floor. Then they squawk back into life the next year and the cycle goes on. So we have learnt to filter them out as background noise to other, more vital global tussles. And yet these talks matter hugely.

Letters: Eccentric English

Millions struggle with the eccentric spelling of English

Leading article: A missed opportunity to feed the world

Despite some furious final-day haggling, the United Nations Food and Agriculture Organisation summit in Rome looked destined to end last night with the usual platitudinous declarations of concern from delegates.

The toxic 'wonder plant' that split world food summit

It's no beauty queen – the stems are long, scrawny and leafless and the pods dangle from the twigs like scorched testicles. Untreated, the seeds are so poisonous that as few as three can kill, while even a small amount induces nausea – hence the jatropha plant's nickname, "black vomit nut".

VCTs plough $360m into biofuels

Venture capital investment in crop-based biofuels reached $360m (£180m) worldwide in the first quarter, despite fears that the industry is taking farmland away from food production.

Letters: Train travel

Council finds ways to take the strain out of train travel

Letters: Biofuels

Why biofuels could actually mean more CO2 emissions

Daniel Howden: Brazil's experience testifies to the downside of this energy revolution

The apostles of biofuels would have us believe that the congested streets of Sao Paulo offer a glimpse of a better future. There, traffic jams are made of flex-fuel cars that run off a growing menu of bio and fossil fuel mixtures and all filling stations offer "alcohol" and "gas" at the pump.

Energy Industry: End of biofuel subsidy 'only serves to muddy Whitehall's position'

The Government will pocket £550m from the cancellation of a biofuels subsidy programme in a move that the energy industry said was indicative of a package of energy and climate change policies that muddied Whitehall's stance on the issues.

Hidden victims of the 'green revolution'

Biofuels are nothing new to Simeon Mayimel. He's been burning charcoal and elephant dung for years. He had never expected that they would change his or his people's way of life.

Africans unite in calling for immediate moratorium on switch from food to fuel

Scientists and NGOs across Africa are calling for a moratorium on new biofuels projects as millions of acres of prime agricultural land in sub-Saharan Africa are switched from food to fuel.

Michael McCarthy: 'Free lunch' that could cost the earth

When biofuels burst onto the environment scene a few years ago, they seemed to be that rarest of phenomena: the free lunch.

Biofuels make climate change worse, scientific study concludes

Growing crops to make biofuels results in vast amounts of carbon dioxide being released into the atmosphere and does nothing to stop climate change or global warming, according to the first thorough scientific audit of a biofuel's carbon budget.

Volvo C30 1.8F SE Sport - The Verdict

Are we ready for these fuelish things?: Bioethanol could help save the planet - if you can find a pump. David Wilkins and our testers try it out in a Volvo C30

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