Climate change has highlighted the need for a new, green, energy infrastructure. But all the talk about harnessing the energy of the sun -- and solar-generated phenomena like wind and tides -- has overshadowed the limitless potential that lies at the Earth's molten core.

Portfolio.com covers the efforts and obstacles in tapping geothermal energy. Wired.com explores the technical breakthroughs that could put a geyser-spun turbine in every town.

Portfolio.com's Perspective: Geothermal Heats Up
by Todd Woody

Wired.com's Perspective: Artificial Geysers
by Alexis Madrigal