That’s right, bubbles in space. The thinking is based on two areas of concern. One is that try as we might to reduce or even eliminate greenhouse gas emissions moving into the future, the damage we’ve already done from over a century of advanced industrialization has already set the course of the Earth’s climate trajectory in a bad direction. It may be so bad that even if we were to completely stop all greenhouse gas emissions tomorrow, we would still have to live with the severe impacts of climate change for decades and even centuries to come, including continued rising sea levels, more extreme weather events, and disruptions to food producing regions.