Bayer AG and Nestle SA are leading efforts to measure and cut emissions as companies increasingly view extreme weather events caused by climate change as a threat to their business, the Carbon Disclosure Project said.

About 37 percent of respondents in a survey of the 500 biggest companies reported an immediate danger to their operations from disruptions ranging from floods that shut factories in Thailand to drought that's decimated crops in the U.S., the London-based non-profit said today in a report. That's up from 30 percent last year and 10 percent in 2010.

"There's an attention to extreme weather events which are in many cases disrupting businesses' operations and supply chains," Carbon Disclosure Project Executive Chairman Paul Dickinson said yesterday in a phone interview. "Legislative action and extreme weather events are coming together to provide a tipping point for companies to pay attention to emissions."