Guardian: Even if the world is successful in cutting carbon emissions in the future, California needs to start preparing for rising sea levels, hotter weather and other effects of climate change, a new state report recommends. It encourages local communities to rethink future development in low-lying coastal areas, reinforce levees that protect flood-prone areas and conserve already strapped water supplies in the most populous US state. "We still have to adapt, no matter what we do, …