During Al Gore’s testimony to the Senate, he offered his support for the global warming bill co-sponsored by Sens. Barbara Boxer and Bernie Sanders, which by 2050 would slash greenhouse gas emissions 80% from 1990 levels.

It’s considered to be the most aggressive bill on the table, but not considered to be a candidate to reach the Senate floor, even though Boxer chairs the Senate’s environmental committee. Gore’s endorsement could strengthen it’s position.