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Yesterday, Union Pacific Railroad announced it achieved best-ever performance in the Carbon Disclosure Project's (CDP) S&P 500 Climate Change Report for 2012. The railroad's carbon disclosure score of 87 jumped 53 percent compared with last year and was 87 percent higher than comparable companies in the CDP's industrial sector, UP officials said in a prepared statement.

The score resulted in a B rating in the CDP's performance band, the same rating as all other railroads in the 2012 climate change report, they said.

"Our CDP performance reflects the company's ongoing commitment to environmental responsibility and reporting," said Bob Grimaila, UP's vice president of safety, security and environment.

Last month, UP announced plans to spend $20 million to test new technology designed to reduce diesel emissions from freight locomotives in California. A series of 25 experimental locomotives are operating in two UP yards in the state as part of a rigorous test of emissions-reducing technologies.

In addition, the Class I last year:
• purchased 100 new fuel-efficient locomotives and retired older, less fuel-efficient ones;
• earned the U.S. Environmental Protection Agency's Clean Air Excellence Award in recognition of emissions-reduction innovation;
• recycled 100 percent of used oil and fuel captured at fueling and servicing stations; and
• continued to improve fuel efficiency.