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Stories by Robert Howarth

Boundaries for a Healthy Planet

Scientists have set thresholds for key environmental processes that, if crossed, could threaten Earth's habitability. Ominously, three have already been exceeded

March 19, 2010 — Jonathan Foley, Gretchen C. Daily, Robert Howarth, David A. Vaccari, Adele C. Morris, Eric F. Lambin, Scott C. Doney, Peter H. Gleick and David W. Fahey

Stand Up for Science Journalism!

Staying informed has never been more important.