Asbury Park Press: The United States-China agreement on climate change is a huge political triumph, possibly "historic," as its supporters say. Whether it much alters the world's climate is a more open question.
Recall the agreement's outlines. By 2030, China pledges to reach peak emissions of global greenhouse gases and also to increase its reliance on non-fossil fuels to 20 percent of its total energy. For its part, the United States committed to reducing its greenhouse gas emissions in 2025 by 26 percent to 28...