TechnologyUnder-inflated tyres take toll on lives and fuel A quarter of US citizens drive cars with severely under-inflated tyres, resulting in hundreds of fatalities and over a billion gallons of wasted petrol each year ¿ìè¶ÌÊÓÆµ
EarthSatnav gives directions for a greener route When it comes to greenhouse gas emissions, the best route may not be the fastest, nor even the shortest ¿ìè¶ÌÊÓÆµ