Gavin Hammon

“This terrifying experiment has already been set in motion. Unlike nuclear war—which is a future potential—climate change is a present reality. There is a scientific consensus that human activities, in particular the emission of greenhouse gases such as carbon dioxide, are causing the earth’s climate to change at a frightening rate.7 Nobody knows exactly how much carbon dioxide we can continue to pump into the atmosphere without triggering an irreversible cataclysm. But our best scientific estimates indicate that unless we dramatically cut the emission of greenhouse gases in the next twenty years, average global temperatures will increase by more than 3.6ºF, resulting in expanding deserts, disappearing ice caps, rising oceans and more frequent extreme weather events such as hurricanes and typhoons.8 These changes in turn will disrupt agricultural production, inundate cities, make much of the world uninhabitable, and send hundreds of millions of refugees in search of new homes.9 Moreover, we are rapidly approaching a number of tipping points, beyond which even a dramatic drop in greenhouse gas emissions will not be enough to reverse the trend and avoid a worldwide tragedy. For example, as global warming melts the polar ice sheets, less sunlight is reflected back from planet Earth to outer space. This means that the planet absorbs more heat, temperatures rise even higher, and the ice melts even faster. Once this feedback loop crosses a critical threshold it will gather an unstoppable momentum, and all the ice in the polar regions will melt even if humans stop burning coal, oil, and gas. Therefore it is not enough that we recognize the danger we face. It is critical that we actually do something about it now. Unfortunately, as of 2018, instead of a reduction in greenhouse gas emissions, the global emission rate is still increasing. Humanity has very little time left to wean itself from fossil fuels. We need to enter rehab today. Not next year or next month, but today. “Hello, I am Homo sapiens, and I am a fossil-fuel addict.”
― Yuval Noah Harari, 21 Lessons for the 21st Century