By Melanie Mason and Chris Megerian, The Los Angeles Times.

The party platforms of Democrats and Republicans, finalized ahead of their respective conventions this month, reflect the stark divide between the parties, on both foreign affairs and domestic social issues.

Here’s a rundown of where the parties land on key topics:

Climate change

Democrats describe climate change as a “real and urgent threat,” and they call for setting a price on greenhouse gas emissions. “Climate change is too important to wait for climate deniers and defeatists in Congress to start listening to science,” and government officials must take any steps they can to reduce pollution, the platform says. It calls for the country to generate half of its electricity from clean sources in the next decade and for cleaner transportation fuels, more public transit and a tax code that creates incentives for renewable energy.