Welcome to the second edition of Frontiers in Brief – showcasing great new research, trending global issues and Open Science. This month, World Meteorological Day and Earth Hour focused attention on the climate challenges we face, but were humans already changing the climate thousands of years ago in the Sahara? On the back of World Water Day read two pieces on how science and policy can work together to address the global freshwater crisis and protect our oceans. Thanks to all of you who took our survey, for those who still want to provide feedback it is open below for another month.
Wishing you a great month ahead, your Frontiers Team.