If enormous heat deep in Iceland's volcanoes can be harnessed for geothermal energy, it may exported to Europe one day.
As technology makes it easier for people to produce and store energy on-site, more people may say goodbye to their utility companies.
Renewable energy will come of age in 25 years. On the horizon: harnessing solar power from space an offshore wind farms.
Some say the future will rely on recycling waste energy for new purposes, but is "energy harvesting" technology viable?
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The world will see big shifts on both the usage and supply sides of the energy equation, according to a recent forecast.
Looking long-term? Here's a list of Cramer faves till the year 2039
Kat Cole knows how to translate America's guilty pleasures into profits. The Cinabbon CEO was once a Hooters' server.