David Lindsay
Dar es Salaam, Tanzania (CNN) -- An estimated 3 billion people -- nearly half the world's population -- still use an open fire as their primary source of energy for cooking and heating.
But there's a problem: the smoke.
Ann Goodman
How might urban climate change affect business? What can business -- and cities -- do about it? And how might each help the other prepare for a potential threat to what's clearly a mutually beneficial relationship?
BAN KI-MOON
As a child growing up during the Korean War, I studied by candlelight. Electric conveniences such as refrigerators and fans were largely unknown. Yet within my lifetime, that reality changed utterly. Easy access to energy opened abundant new possibilities for my family and my nation.
A new geospatial application developed by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) allows users to easily and accurately map potential renewable energy resources in the United States.
Analia Murias
A report by the United Nations Development Programme (UNDP) indicates that ocean surface water warming limits the upward movement of nutrients and this can cause a decrease in fish production.
John Vidal
The ecologically tumultuous year saw record greenhouse gas emissions, melting Arctic sea ice, natural disasters and extreme weather – and the world's second worst nuclear disaster
Dan Collyns
Bolivia has vast reserves of lithium, seen as the green energy fuel of the future, which it wants to exploit on its own. But the lithium is locked underneath a 10,000 sq km salt flat
Stewart Taggart
By 2050, Asia could be connected by a massive energy and information architecture, believes Stewart Taggart.
Eric Hilaire
Photographer Peter Caton talks about his visit to the Cerrado – the world's largest savannah. It contains 5% of the world's biodiversity, but is being destroyed at an incredible rate to make way for monocultures that may have devastating long-term effects.
Global carbon dioxide emissions from burning fossil fuels have increased by 49 per cent in the last two decades, according to the latest figures by an international team, including researchers at the Tyndall Centre for Climate Change Research, University of East Anglia.