News releases about health, Earth science and social sciences make up EurekAlert!'s 2018 trending news list

(EurekAlert!) Health news occupied six of the 10 most-viewed news releases on EurekAlert! in 2018. The most popular news release, 'Study: Lead and other toxic metals found in e-cigarette 'vapors,'' submitted by Johns Hopkins University Bloomberg School of Public Health received 337,013 views.