This could have been a legacy initiative, a moment for the prime minister to stake a leadership position in one of the most urgent issues of our time.
Read MoreBig investment firms are again using their vast stock holdings to pressure corporate executives over everything from boardroom diversity and political activity to food waste and plans to reduce greenhouse-gas emissions.
Read MoreHydraulic fracturing, better known as fracking, is a controversial method used to extract natural gas and oil from shale rock formations.
Read MoreInvestors' efforts to get energy and utility companies to set greenhouse gas reduction targets and disclose their plans for meeting those goals are facing more hurdles now than in the past five years.
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