Reuters: The world’s top greenhouse gas polluters will try to work out ways to curb carbon emissions from industries and fund cleaner energy projects for poorer nations when they gather in Japan from Friday. The G20, ranging from top polluters the United States and China to Indonesia, Brazil and South Africa, emit about 80 percent of mankind’s greenhouse gases. Pressure is growing on these nations to work out a global pact to halt and then reverse growing emissions of carbon dioxide, …