Giant metal supertrees add to the urban garden that Singapore is creating in its Gardens by the Bay project.
A report by a panel from the Japanese parliament declared that the Fukushima nuclear disaster was avoidable.
Two years after the Deepwater Horizon oil spill, tar balls and dead fish are still washing up along the Gulf coast.
White roofs in cities could prevent the world from emitting billions of tons of CO2, according to the White Roof Project.
Tropical Storm Debby, the earliest fourth-named tropical storm, is bringing high winds and heavy rain to the Gulf Coast.
An oil platform that is no longer in use now teems with life from a coral reef growing on the structure.
A solar-powered plane is on its way from Spain to Morocco in a bid to finish the second leg of its Transcontinental journey.
German solar power plants set a world record in late May, meeting nearly 50 percent of the nation’s midday needs.