Clean air halves health costs in Chinese city

Air pollution regulations over the last decade in Taiyuan, China, have substantially improved the health of people living there, accounting for a greater than 50% reduction in costs associated with loss of life and disability ...

First estimate of total viruses in mammals

Scientists estimate that there is a minimum of 320,000 viruses in mammals awaiting discovery. Collecting evidence of these viruses, or even a majority of them, they say, could provide information critical to early detection ...

New virus discovered in stranded dolphin

Researchers at the Center for Infection and Immunity at Columbia University's Mailman School of Public Health and colleagues have identified a new virus associated with the death of a short-beaked dolphin found stranded on ...

Hepatitis C-like viruses identified in bats and rodents

As many as one in 50 people around the world is infected with some type of hepacivirus or pegivirus, including up to 200 million with hepatitis C virus (HCV), a leading cause of liver failure and liver cancer. There has been ...

Ozone levels have sizeable impact on worker productivity

Researchers in the Department of Health Policy and Management at Columbia's Mailman School of Public Health assessed the impact of pollution on agricultural worker productivity using daily variations in ozone levels. Their ...

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