BACKGROUND: About an eighth of the earth's land surface is in protected areas (hereafter "PAs"), most created during the 20(th) century. Natural landscapes are critical for species persistence and PAs can play a major role ...

While there are many reasons to continue to smoke in spite of its consequences for health, the concern that many smoke because they misperceive the risks of smoking remains a focus of public discussion and motivates tobacco ...

We examine how changes in hospital ownership to and from for-profit status affect quality and Medicare payments per hospital stay. We hypothesize that hospitals converting to for-profit ownership boost post acquisition ...