NYT: As anticipation grows about a possible renaissance for the nuclear power industry — and about its potential for curbing greenhouse gas emissions — some politicians are stepping up warnings about the high cost of such projects. Last week, Traicho Traikov, the Bulgarian economy and energy minister, said the cost of building a second plant near the Danube River had reached 9 billion euros, or $11.4 billion, according to the Sofia News Agency. The original cost of the project for …