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As part of Sierra Club 2% Campaign — which seeks an 80 percent cut in carbon emissions by 2050, or 2 percent a year — celebrities such as singer Missy Higgins and actor William Shatner have produced PSAs urging action.

In the piece, Missy points out that “scientists say we need to make a big change in the amount of carbon that comes from our cars, our homes and our businesses.” Missy reminds us that being a part of the solution to global warming is everyone’s responsibility – governments, families, businesses – and that we need to cut our carbon emissions 80% by 2050. But she also says that we don’t need to do this all at once and that every little bit helps. If we can cut our carbon emissions by an average of 2% per year, we can stop some of the most damaging effects of global warming.

Check out the video below — or visit the official site for more information.