This past summer at least 100,000 Americans took to the streets in the People’s Climate March to demand that political leaders take action on global warming. As nations dither on meaningful steps to combat climate change, however, localities are stepping in with their own measures to reduce emissions of greenhouse gases. David Biello reports how cities are coming to the rescue.

Unfortunately, a cracked smartphone screen is often beyond rescue. But if those displays were flexible to begin with, shattering wouldn’t be a problem. To that end, materials scientists in Korea have developed bendable LEDs that could make their way into electronics that ultimately flex and roll.

You don’t have to be a scientist or lab professional to contribute research and knowledge, though. Amateur mycologist Rodham Tulloss has one of the world’s largest and most diverse collections of amanitas—the group of fungi that includes death caps, destroying angels and the polka-dotted mushrooms of Super Mario renown—in his garage. And he is looking for more. Peter Andrey Smith chronicles how Tulloss’s love of mushrooms has earned him co-authorship on academic papers and an honorary gig at a major botanical garden.

Tulloss’s attention to the world’s—albeit uncharismatic—biota would probably have pleased John Muir. Before his death a century ago Muir advocated for America’s national parks and penned essays that still inspire environmentalists. What are today’s biggest conservation hurdles? A handful of leaders chime in.

Also in December’s Advances: