A natural resource is defined as a form of energy and/or matter which is essential for the functioning of organisms, populations and ecosystems. In the case of humans, a natural resource, in his words ...

NPR's Ayesha Rascoe speaks to Jesse Jenkins of Princeton University about enhanced geothermal energy, a clean, renewable power source that is being tested on a large scale. Enhanced geothermal energy ...

Mary Cunningham is a reporter for CBS MoneyWatch. Before joining the business and finance vertical, she worked at "60 Minutes," CBSNews.com and CBS News 24/7 as part of the CBS News Associate Program.