The Lancet Countdown, an international research collaboration convened by the prestigious Lancet medical journals, is "an independent, global monitoring system dedicated to tracking the health dimensions of the impacts of, and the response to, climate change." The Lancet Countdown began publishing annual reports in 2016 and recently released their 2018 report, which draws on studies from multiple disciplines, such as climate scientists, social and political scientists, and public health professionals, and presents data for 2017 on 41 indicators across a range of themes. One of the key messages of their 2018 report is that the effects of climate change, including increased heat waves and vector-borne diseases, are already causing negative impacts on human health. The report also found that a "lack of progress in reducing emissions and building adaptive capacity ... [has] the potential to disrupt core public health infrastructure and overwhelm health services." Interested readers can access the full 36-page report with a free account. The Lancet Countdown's 2018 report was produced collaboratively between 27 universities, academic institutions, and intergovernmental agencies around the world, including the World Health Organization and the World Bank, with financial and technical support from the Wellcome Trust.