Gaps in the nation’s stroke transfer system are drastically reducing survivors’ chances of receiving endovascular thrombectomy and increasing the likelihood that they will leave the hospital with a disability, according to a study led by University of Michigan and University of Chicago.

A multi-institutional study led by the University of California, Davis, finds that living in urban areas with a higher percentage of visible trees is associated with a 4% decrease in cardiovascular disease. By comparison, living in urban areas with a higher percentage of grass was associated with a 6% increase in cardiovascular disease. Likewise, a higher rate of other types of green space, like bushes or shrubs, was associated with a 3% increase in cardiovascular disease. The new research was published in Environmental Epidemiology.