"It claims renewable energy, which provides 18 per cent of the world's electricity, could provide 35 per cent by 2030, and nuclear power, on a 16 per cent share, could provide 18 per cent by the same date. However, it notes of nuclear: "Safety, weapons proliferation and waste remain as constraints".
It proposes that biofuels could play a significant part in reducing transport emissions, and the biggest gains might come from energy efficiency. Exotic fixes, such as putting objects in space to shield us from sunlight, are dismissed as "speculative".
On the fashionable idea of carbon offsetting - paying a firm to plant trees to compensate for the CO2 emitted on your plane journey - the report does not utter a word. What it does insist on is the necessity of having a high price for carbon, to make the introduction of low-carbon alternatives for energy generation and transport cost effective around the world."
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