2020 Daily Trail Markers: Andrew Yang unveils $4.87 trillion policy to address climate change Democratic presidential candidate Andrew Yang unveiled an aggressive policy proposal to address climate change at a gathering of supporters in New Hampshire. The entrepreneur plan calls for nearly $5 billion dollars in climate-spending over the course of 20 years. 2020 campaign reporter Nicole Sganga joins CBSN for Monday's edition of 2020 Daily Trail Markers.