A high-profile UN panel headed by the presidents of Finland and South Africa hopes to spark an "ever-green" energy revolution later this year in Brazil using a general roadmap it presented Monday on how world leaders could wean the world off fossil fuels.

A photograph from the 2010 Arab-African summit captures the former leaders of Tunisia, Yemen, Libya and Egypt, all deposed and one of them dead, looking untouchable before the Arab Spring revolutions rocked the Middle East.

Another long, hot summer is looming for Japan just as it shuts down its last operating nuclear power reactor, worsening a squeeze on electricity and adding urgency to calls for a green energy revolution.