Bloomberg: Polands leading opposition party is seeking to negotiate exemptions from the European Unions rules on reducing carbon emissions because the nations energy security and economic development depends on coal. Law & Justice, which opinion polls show winning Octobers general election, has vowed to toughen Polands stance on climate issues to protect the $526 billion economy, which relies on coal for about 90 percent of its electricity. While the government has been critical of EU emissions goals,...