EarthElectric cars are so cool they may make it colder A benefit of replacing conventional cars with electric ones could be a cooling effect in cities of up to 1 °C, which could cut air conditioning use ¿ìè¶ÌÊÓÆµ
TechnologyTraffic light hackers could cause jams across the US Researchers have hacked traffic lights across a Michigan city, and they warn that the weakness they found exists at 100,000 intersections in the country Analysis