Seven to 10 million koalas inhabited Australia at the time of white settlement two centuries ago. Today only about 100,000 remain. Native to the eucalyptus forests of Australia’s eastern seaboard, koalas were hunted extensively by the continent’s first European settlers
Hydropower—electricity generated from turbines churning in dammed rivers—has been part of America’s energy mix since the 1880s when the world’s first hydroelectric plant began operation on the Fox River in Appleton, Wisconsin. By the 1940s, hydropower accounted for about 40 percent of America’s energy needs.
How can I recycle my unwanted CDs and DVDs?
When Congress passed the Wilderness Act in 1964, it designated 9.1 million acres across the United States permanently off limits to development. Since then, lawmakers have added an additional 96.5 million acres—including more than 50 million acres in Alaska alone—or a total of 105.6 million acres, spread over some 662 different areas and constituting roughly five percent of total U.S. land mass.
Dear EarthTalk: How do hybrid cars get better fuel efficiency than traditional cars?
Dear EarthTalk: How much land has Congress designated as wilderness since passage of the Wilderness Act 40 years ago?
Environmentalists extol the energy-efficient and water-efficient nature of tankless hot water heaters. Saving the Earth is a tankless job.
Is there an established, proven connection between environmental toxins and breast cancer? And what can I do to avoid them if so?
Recent research does in fact show that the incidence of nut allergies among American and British children has tripled within the last two decades. No one knows for sure why, but because the phenomenon seems to be occurring only in developed countries
Dear EarthTalk: What is “biomass energy,” and where in the world is it used?
Do airplanes contribute significantly to air pollution?
