Ecosystems
The $3bn map: scientists pool oceans of data to plot Earth's final frontier
"Can you imagine operating on the land without a map?" Drones and robots are helping to map the vast unknown
If Brazil's incoming president rolls back environmental protection as feared, activists are considering a push from below, U.S.-style
A "climate damages tax" levied on oil, gas and coal companies could raise $300 billion a year by 2030 to bail out hard-hit communities, green groups say
Unless cities go green, "there will be no limiting global warming to 1.5C", warn authors of a guide for urban planners
