Focus
aspen
Aspen Becomes Third US City to Achieve 100% Renewable Energy
Aspen is the first city in the U.S. history to use hydroelectric.
World’s Oldest and Heaviest Tree
Estimated to be between 80,000 and 1,000,000 years old, a quaking aspen grove (Populus tremuloides) in Utah’s Fishlake National Forest wins the prize for not only oldest organism, but also heaviest.
