Polluted air and rivers have acute local health effects and changing rainfall and temperature patterns cause global disruptions in supplies of food and clean water. Learn what is being done to mitigate the impact.
Human umbilical vein endothelial cells. (The Journal of Cell Biology/Flickr)
(Tulane Public Relations/Wikimedia Commons)
A pneumoniae bacterium inside a mouse lung. (The Journal of Cell Biology/Flickr)