Seventy-five businesses with a combined market cap of $2.5 trillion are calling on the U.S. Congress to pass a carbon tax – to combat climate change.

The group includes organic food brands, tech firms like Microsoft and Tesla and big oil producers like BP and Shell.

CGTN’s Giles Gibson reports.

Global companies’ efforts to reduce carbon emissions

CGTN’s Rachelle Akuffo spoke with Jen Austin, policy director at We Mean Business Coalition, on growing efforts from businesses to curb carbon emissions.