Causescommons.wikimedia.org Up to 1 in 6 U.S. tree species threatened with extinction, study finds Climate change is supercharging tree diseases as invasive species ravage American forests.
Impactscommons.wikimedia.org Dozens of U.S. tree species threatened with extinction, study says As many as 100 tree species in the United States are facing extinction from invasive insects, disease and the impact of climate change, according to a new five-year study that found 11% to 16% of trees are threatened.
