Climate change is already causing widespread harm to the health of all people living in the United States, with extreme heat making workers less productive and toxic air contributing to 64,000 deaths in a single year. In a new brief on climate change and health in the U.S. published Nov. 13, University of Washington and Harvard University researchers say it is still possible to prevent some health effects and mitigate others, and that aggressive action on climate is also action to protect health.

Wound healing events in mucous tissues during early infection by Simian Immunodeficiency Virus, or SIV, guard some primate species against developing AIDS, a recent study has learned. The research looked at why certain species can carry the virus throughout their lives, and still avoid disease progression.

SIV is closely related to the Human Immunodeficiency Virus. It is used as a laboratory model for many studies seeking AIDS and HIV cures and preventions.

With urban populations surging around the world, cities will struggle to keep residents safe from fast-growing heat risks turbo-charged by climate change, scientists and public health experts warned this week.

Heat is already the leading cause of deaths from extreme weather in countries including the United States. The problem is particularly severe in cities, where temperature extremes are rising much faster than the global average, they said.

New research shows that interactive, mobile technology safely improves male circumcision care quality at lower cost than standard post-operative visits.