Democratic 2020 frontrunner Joe Biden was forced into defending his environmental record Tuesday after a popular progressive in Congress demanded presidential hopefuls abandon a “middle-of-the-road” approach to combatting climate change. “You never heard me say middle of the road. The 29-year-old House Democrat bemoaned lawmaker inaction 30 years ago — when Biden served in the Senate — as US space agency NASA warned them about the existential threat of climate change.
