Nathan Johnson

The World

Combating Bio-Invaders

Many American harbors are polluted with invasive organisms, often transported in the ballast water of ships. The problem is particularly bad in California. But, scientists there are developing aggressive ways to combat invasive species. Nathan Johnson reports.

The World

Rising Gas Prices

The World

Urban Ore

The World

Bioacoustics

The World

Spotting Owls

The World

It’s Not Easy Being Green

The Green Party has made significant headway in California. Thirty Greens currently hold elected office in the state, mostly at the local level. But as Nathan Johnson reports, Green Party candidates are finding it difficult to raise the money and build the organizations needed to win higher offices.

The World

Burning Rubber

Not very many of the quarter-billion tires that Americans dispose of each year are recycled. As Nathan Johnson reports, many end up in huge piles in landfills where they easily catch fire, sometimes by accident and sometimes on purpose.