ClimateWire: A small English traditional brewer is taking giant steps in its own private battle with human-induced climate change, not only greening its beer but saving water and making biogas out of its wastes. It plans to use it to feed part of the nation’s electrical system and to fuel its fleet of beer trucks. To Adnams Southwold, in business since 1872 on the east coast of England, climate change is not small beer. Its campaign began several years ago — well ahead of the rest of the brewing …