President Biden said that the United States will cut its greenhouse gas emissions to half of 2005 levels by the end of this decade. The Senate is on track to approve billions for climate resiliency programs this week and Democrats have made climate policy a central piece of their forthcoming $3.5 trillion economic package.The proposals are all unprecedented — but are they enough to meet the scale of the challenge?This episode: White House correspondent Asma Khalid, congressional correspondent Kelsey Snell, science correspondent Dan Charles.Connect:Subscribe to the NPR Politics Podcast here.Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Listen to our playlist The NPR Politics Daily Workout.Subscribe to the NPR Politics Newsletter.Find and support your local public radio station.