Wisconsin is going to be a part of two new "hydrogen hubs" backers say will generate clean fuel but some environmental groups say it is a mixed bag. The federal government just announced $7 billion in funding to produce hydrogen, which is used in hard-to-decarbonize sectors like aviation fuel, steel and glass production, power generation, refining, and heavy-duty transportation. Patrick Drupp, director of climate policy for the Sierra Club, warned the devil is in the details. ...