![Khalil Hosny Mancy, professor emeritus of Environmental Health Sciences, lowers an oxygen sensor into the Nile River as it runs through Cairo in 1971.](/stories/2019posts/2019images/khalil-hosny-mancy.jpg)
Healthy Water, Healthy People
Khalil Hosny Mancy
Long before the dangers of global warming were clear to us, public health researchers were pursuing protective measures for our most basic and valuable environmental resources and linking that work to concerns about health equity and environmental justice.