Cactus Pear: A Fruitful Alternative Crop for Bioenergy Production
Could this prickly desert species be the answer to our sustainable energy needs? By Lupe Alvarez.
Invasive aquatic plants threaten Lake Tahoe’s clear waters
The plants look like seaweed, rising from the shallow areas of Lake Tahoe to the surface. But in this fresh-water, high-mountain lake with a $5-billion recreation economy, invasive plants threaten both the environment and an international tourist destination.