Several proposals for geoengineering projects are being explored–including cloud seeding, ocean iron fertilization and afforestation–as a plan for mitigating climate change. Monica Kanojia explores these methods and the current economic and technological issues surrounding them.
Tim Birkhead explains what song bird research can contribute to human health, Surprising Science describes the evolution of a feline’s roar (or meow), a Geophysical Research Letters study assesses the world’s dwindling groundwater supply, Nature News interviews Gabriela Chavarria—the U.S. Fish and Wildlife Service’s top science adviser—and Chris Palmer’s book reveals faking in nature videos. Here are stories in ecology from the last week in September.