Finally the day you've all been waiting for has arrived: EPA has released its new boiler emissions rules for hazardous pollutants! (The cool kids call it "the boiler MACT.") Most review and discussion of these rules so far has been silent on the most significant aspect: they introduce output-based emissions standards. As Grist readers know, I've been preaching the virtues of output-based standards for years now -- this is a wonky subject, but one greens would do well to understand. Output-based standards have been adopted by several states, but somewhat haphazardly, in part because of a lack of consistent EPA …
Get Grist in Your Inbox
Amory Lovins’ high-tech home skimps on energy but not on comfort
This little fox loves transit. Should we tell him he just missed his stop?
Plants are poison — and that just may be why they keep us healthy
Millions alive today would have to die before the paleo diet could take over
Meet the Andy Griffith who’s going after fracking polluters