An ancient beauty in southwestern Colorado, Chimney Rock became the third national monument named by President Obama on Friday. More than just a spectacular feature, Chimney Rock's towering sandstone pillars were of astronomical importance to the ancestral Pueblo people over 1,000 years ago.
With crowd-sourced funding through Kickstarter, a team of inventors are building a Solar Pocket Factory: a machine designed to print micro solar panels--like the ones used in phone chargers and garden lights. Co-inventor Shawn Frayne stopped by Flora Lichtman's backyard with a few pieces of the prototype to explain how the machine works.
Each year, Americans waste 33 million tons of food. Dana Gunders, a scientist at the Natural Resources Defense Council, and author Jonathan Bloom discuss the economic and environmental impacts of food waste, and what can be done to fight the growing problem.
At a new experimental house run by the National Institute of Standards and Technology, software programs replicate the day-to-day activities of humans. The goal is to demonstrate that an energy-efficient house can be "net zero," not consuming more energy than it produces.
Forests on the island of Guam are experiencing a spider epidemic, and invasive brown tree snakes are to blame. The snakes have nearly obliterated the island's native forest birds — which used to keep spider numbers in check.
Some of the biggest human migrations coincided with major changes in climate, according to a new analysis. Researchers say early humans set out in search of climates where more food was available. And some populations stayed put in certain locations because barriers like glaciers blocked their progress.
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