Biofuels can never be used sustainably on a large scale to power transport. The only solution is to shift rapidly to electricity.

Increased use of nuclear (an outright competitor to coal as a deliverer of baseload power) is essential to combat climate change

Bob Watson rightly warns us to prepare for 4C global warming. To avoid that, we must make drastic CO2 cuts now

The exact timescale of global warming is unknown, but the 100 months campaign provides a much-needed sense of urgency

How things have changed. Today, bookshops have entire shelves devoted to climate change. Television, too, has belatedly begun to catch up

A "war economy" social mobilisation harnessed, this time not towards fighting fascism, but towards heading off ecological crisis

The arguments of climate sceptics have largely been moulded by a far more sinister force - the US-based conservative think tanks

In a seven-minute 'authored piece' for Radio 4's The World Tonight, I speak to car buyers, a climate scientist and an oil industry expert to explore whether high oil prices are actually a good thing for the climate. Listen again here (3min 50 secs in).

Today's poll shows that public concern about climate change has reached a critical mass and now includes the less well-off

The government is keen to reassess GM crops in light of the food crisis - but running to profit-seeking companies is not the answer

Not being a scientist is a help rather than a hindrance when it comes to communicating - with the necessary passion - the findings of scientific research

Much to the surprise of its author, Six Degrees has scooped the prestigious Royal Society Science Books Prize, triumphing over such strong contenders as Steve Jones's 'Coral: A pessimist in paradise', and J. Craig Venter's 'A Life Decoded'.

The end of cheap oil helps renewables, but makes far dirtier alternatives viable. A low-carbon future will demand brave leadership

At best we will limit the extent of global warming, but Kyoto barely helps. Does humanity have the foresight to save itself?

Six Degrees has been shortlisted for the prestigious 2008 Royal Society Prize for Science Books - along with J. Craig Venter's 'A Life Decoded', Steve Jones for his book 'Coral', and 'The Sun Kings' by Stuart Clark.

A far simpler way to constrain carbon is to deal "upstream" with the few dozen companies that produce or import fossil fuels, rather than hitting tens of millions of consumers

Germany has 200 times more solar power installed than the UK - and this is not because Germany gets any more sun.