The links between greenhouse gas emissions, climate change, and health.
Credit: The Lancet

Climate change, if left unchecked, threatens to undermine the last half century of gains in global health. That’s the conclusion of a study released Monday by an international commission convened by the Lancet, a prestigious medical journal based in the UK. Declaring it a “medical emergency,” the authors argued that the potential impacts of global warming—such as floods, drought, heat stress, catastrophic storms, the spread of disease, and increased food insecurity—pose a “potentially catastrophic risk” to human health. (emphasis added)

The report notes that deaths from air pollution and heat waves have been on the rise. In 2010, for example, wildfires in Russia burned 2.7 million acres, doubling the amount of particulate matter in the Moscow region. The pollution, combined with a severe heat wave, contributed to an increase of 11,000 deaths in just one month. (Or consider a more recent example, when nearly