Geothermal energy deep underground is available almost everywhere on our planet. With financial support from climate-conscious tech companies, clever engineers are rapidly developing enhanced geothermal power projects that can access this resource. A recent trip to Yellowstone National Park with llama support provided the inspiration for me to learn more about this subject.
Reducing the massive amount of carbon dioxide heating our planet will rely in part on making alternative energy sources competitive with fossil fuels. Demand for electricity is surging worldwide—and simpler and safer nuclear reactors can provide carbon-free power around the clock.
Around 13,000 years ago, Paleoindian hunters were making red ochre from iron-rich hematite collected from a quarry in the western foothills of the Rocky Mountains. Red ochre had an important role in Paleoindian societies, and is associated with many campsites, kill sites, graves, caches—and notably, found in rock art. Worldwide, the historical record of red ochre mines extends back tens of thousands of years.
