For millions of displaced people around the world – many of them refugees, living in temporary shelters under crowded conditions – an outbreak of disease is devastating. Each year, the measles virus kills more than 134,000 people globally, and another 100,000 children are born with defects caused by congenital rubella syndrome.
![Image "closing the carbon cycle"](https://www.artsci.utoronto.ca/sites/default/files/styles/ne_3btn_widget/public/closing-carbon-cycle-350x500-1.jpg?itok=-RS9Cb9g "Image "closing the carbon cycle"")