One little trip can blow you right out of the water. As noted earlier,  I have committed to trying to live a 1.5° lifestyle, which means limiting my annual carbon footprint to the equivalent of 2.5 metric tonnes of carbon dioxide emissions, the maximum average emissions per capita based on IPCC research. That works out to 6.85 kilograms per day. In my last post,  Living a 1.5 degree lifestyle is hard,  I  quoted a study  which noted that we should concentrate on the "hot spots": Focusing efforts to change lifestyles in relation to these areas would yield the most benefits: meat and dairy consumption, fossil-fuel-based energy, car use, and air travel. The three domains these footprints occur in – nutrition, housing, and mobility – tend to have the largest impact (approximately 75%) on total lifestyle carbon footprints. Events of the last few days have graphically proven this point to me. TreeHugger has wonderful new owners,  DotDash , and...