Dust mites, gall wasps and book lice don't bite, but they might make you wheeze. Scientists found about 100 types of arthropods wiggling or munching skin flakes in typical homes. Take a look.
Voters in the San Francisco Bay Area will vote in June on a proposed property tax which would be used to restore wetlands to protect against rising sea levels. The tax is not based on property value.
As the climate change debate rages, leaders in Miami Beach, a city that routinely floods, are tackling sea-level rise head on by raising roads and seawalls and installing new storm sewers and pumps.
In a blow to the coal industry, a new terminal in the Pacific Northwest was denied approval after opposition from environmental groups and a debate between local Native American tribes.
Is it possible to shrink the carbon footprint of the dead? An organization wants to persuade Indians to adopt "green" cremations and make an important Hindu death rite more environmentally friendly.
Our appetite for the Pacific bluefin — prized for its tender, flavorful flesh — has reduced stocks to just 2.6 percent of original levels. The incentive to save bluefin is ecological — and financial.
In the Indian capital of New Delhi — the city with the most polluted air in the world — exercising outdoors is as good for your lungs as chain smoking. A triathlete explains why he keeps at it.
How does a country bring its people into the 21st century without pumping huge amounts of carbon into the atmosphere? This challenge is more acute in India than anywhere else.
Prospects in the industry are dim, and even the billionaire investor, who made his fortune in oil, has turned to alternative energies. Still, the self-described "realist" says they aren't the answer.