As the 10th anniversary of California's landmark climate change law, A.B. 32, draws near, policymakers say its push to slash emissions has been a boon not only to industries involved in carbon-cutting but also to the economy in general. By all accounts, California is on track to reach its 2020 target of reducing its emissions to 431 million metric tons of carbon dioxide, the level that researchers estimate the state emitted in 1990. Meanwhile, the state's economy since 2006 has jumped from the eighth- to the sixth-largest in the world. But while California's economy has been relatively buoyant, experts say macroeconomic numbers don't tell the whole story of its climate trajectory.