Chris Nord hasn't changed his mind in the three decades that have elapsed since he was arrested for trespassing at the Seabrook nuclear power plant.

Nuclear power isn't worth the risk, he believes.

Nord, a resident of Newton, was one of more than 1,400 protestors who were arrested and thrown in National Guard armories around New Hampshire during the massive Seabrook protest 30 years ago this week.

The new threat of international terrorism has, if anything, strengthened Nord's opposition to nuclear power and his advocacy of alternative energy sources.

"These nuclear plants and their spent fuel storage pools constitute the single most dangerous terrorist target on United States soil," he said.

Nord and other local protesters remain proud of the role they played in stopping construction of new nuclear reactors, including a second one at Seabrook.

Kristie Conrad, who met her husband, Renny Cushing, through the demonstration, said she vividly remembers the protest at the Seabrook construction site off Route 1, when she was just 23 and a recent graduate of the University of New Hampshire.

And she still keeps a bottle of potassium iodide in the kitchen of her Hampton home. The chemical can protect the thyroid from radiation in the event of a nuclear accident.

Atkinson resident Pat Goodridge said she fears the Seabrook plant even 30 years after it was built and, like Conrad, keeps anti-radiation medication in her home.

"I have my cross and garlic as far as Seabrook goes," said Goodrige, who wasn't at the protest 30 years ago but remembers fearing a nuclear accident when the plant was constructed 18 miles from her home.

Nord, who regularly lectures at colleges and before groups of concerned citizens around the country, said there's reason to worry: Plants like Seabrook are forced to hold on to the nuclear waste they generate because there is no national repository to contain it.

"Until the best and brightest scientists on Earth figure out what to do with it, we should stop making it," he said.

Nord said nuclear power does not produce greenhouse gases, as advocates of atomic energy say. But the mining, processing and shipment of the uranium that fuels nuclear plants does produce such gases, he said.

"It's a slow boat to disaster," he said. "They're trying to market the fear that we're all going to run out of fuel and live in the dark."