In the past two years, litigators at the Natural Resources Defense Council have filed nearly 80 cases challenging Trump administration attempts to roll back environmental and human health protections.

That’s the equivalent of a new lawsuit every 10 days—and so far, the environmentalists are winning. According to a new analysis by the Institute for Policy Integrity at New York University School of Law, the NRDC lawyers have prevailed more than 90 percent of the time in the cases that have been resolved.