The green gauge

Sunday February 3, 2008
The Observer

Going up

· Since cyclists need eyes in the back of their head, why not give them some? The Cervellum is a digital rear-view mirror that attaches to your bike's handlebars. No substitute for looking over your shoulder, though

· Could agriculture, charged with causing 17 to 32 per cent of anthropogenic emissions, actually become a planet-saving carbon sink? Yes according to a new Greenpeace report via a few easy(ish) changes

· Is there a sign of redemption for the Tata car, set to bring affordable motoring (and emissions) to India? The manufacturers of the new Air Car - converts energy into air pressure - have signed a deal for a clean, green Tata

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Going down

· Should 'producer responsibility' be extended to pop stars? We only ask in the wake of 1m unsold 'units' of Robbie Williams's Rudebox album being shipped to China for 'recycling'

· The spotlight is on stationery after the two biggest Japanese paper manufacturers, Oji and Nippon, confessed to lying about the amount of recycled content in their product - for 10 years

· The sun rises slowly on China's renewables revolution. Yes, there are wind turbines, enough to generate 5.4 gigawatts of power. Sadly, however, not very many are actually plugged in...