Issues remain on 40th Earth Day

April 22, 2010 at 12:00a.m.

Associated Press

WASHINGTON

Pollution before the first Earth Day was not only visible, it was in your face: Cleveland’s Cuyahoga River caught fire. An oil spill fouled 30 miles of Southern California beaches. And thick smog choked many cities’ skies.

Not anymore.

Forty years after that first Earth Day on April 22, 1970, smog levels nationwide have dropped by about a quarter, and lead levels in the air are down more than 90 percent. Formerly fetid lakes and burning rivers are now open to swimmers.

The challenges to the planet today are largely invisible — and therefore tougher to tackle.

“To suggest that we’ve made progress is not to say the problem is over,” said William Ruckelshaus, who in 1970 became the first head of the Environmental Protection Agency. “What we’ve done is shift from the very visible kinds of issues to those that are a lot more subtle today.”

Issues such as climate change are less obvious to the naked eye. Since the first Earth Day, carbon dioxide levels in the air have increased by 19 percent, pushing the average annual world temperature up about 1 degree, according to the National Oceanic and Atmospheric Administration.

“We’ve cleaned up what you can see and left everything else in limbo,” said Kathleen Rogers, president of the Earth Day Network.

Improvements took shape in the form of the Clean Air Act, the Clean Water Act and changes in the way businesses treat the environment, said Denis Hayes. Those reforms, he added, grew out of the first Earth Day, an event Hayes helped coordinate.

“It is the most powerful, sweeping, society-wide change America has had since the New Deal,” Hayes said. “The air is cleaner despite the fact that we have twice as many vehicles traveling twice as many miles.”

No place illustrates progress more than the Cuyahoga River.

Cleveland’s main river used to periodically catch fire. On June 22, 1969, trash and an oil slick ignited. The river burned for half an hour, drawing national attention to water pollution.

People didn’t swim in the river at the time, and anyone who fell in needed to be checked by a doctor.

“The river bubbled like a cauldron. There were all kinds of chemicals in there, and that was what was bubbling at the bottom,” said Wayne Bratton, a boat captain then and now, and the first president of the Cleveland Harbor Conservation Committee.