Last week's climate summit and marches has indicated optimistic realism in tackling climate change
Imperial College says Britain could get as much as 40% of its electricity from solar power on sunny days by decade's end
Global greenhouse gas emissions are set to rise by nearly a third in the next two decades, putting hopes of curtailing dangerous climate change beyond reach, a new report by BP has found.
Brazilian negotiators have been accused of using strong-arm tactics at Rio+20 to secure a deal before heads of state start arriving for the Earth Summit later this week.
The Opec oil crisis of the early 1970s, Jeffrey Kaffee, a former commercial pilot, remembers, led to huge frustration at long petrol queues.
First Parisians were urged to get on their bikes with an innovative self-service cycle scheme.