FILE - In this July 27, 2018, file photo, the Dave Johnson coal-fired power plant is silhouetted against the morning sun in Glenrock, Wyo.  More than 300 businesses and investors are calling on the Biden administration to set an ambitious climate change goal that would cut U.S. greenhouse gas emissions by at least 50% below 2005 levels by 2030.   (AP Photo/J. David Ake, File)
A coal-fired power plant in Wyoming, US. More than 300 businesses and investors are calling on the Biden administration to set a climate change goal to cut US greenhouse gas by at least 50% below 2005Show more

Do countries need a system to distinguish 'green' from 'greenwash'?