Top: While touted as a promising
alternative to non-renewable energy sources, biofuels, such as
ethanol made from corn, may pose a threat to animals and the
environment. (photo: Laurie Smith)
Middle: Tasmanian devil populations
have dwindled dramatically in recent months due to a mysterious form
of contagious cancer. (photo: Tasmanian Devil Conservation Park)
Bottom: Through the Marin County
non-lethal cost-share program, ranchers have increased their use of
livestock guard animals, such as llamas, who are known to protect
sheep by warding off predators. (photo: Camilla H. Fox) | 
