By Eric Roston An encouraging trend is emerging, even as extreme weather losses mount. Estimates for global warming are coming down. The International Energy Agency expects fossil fuel demand and emissions to peak by 2030. (OPEC disagrees.) The Inevitable Policy Response, a United Nations-supported research group for investors, now delivers a "high-conviction forecast" that the rise in the global average temperature will peak at 1.7C to 1.8C, and countries will zero out emissions by 2080. That's less dangerous than 2C but more dangerous than 1.5C, the high- and low-end international targets. The first UN assessment of national climate commitments finds "the Paris Agreement has led to contributions that significantly reduce forecasts of future warming, yet the world is not on track to meet the long-term goals." A man in Ahmedabad, India. Photographer: Bloomberg July and August were the hottest and second-hottest months ever recorded. Almost half of the world's population withered through greenhouse-gas-juiced heat for at least 30 days, according to Climate Central researchers. Ocean temperatures broke records. The hottest parts of the world—India and Pakistan, the Persian Gulf, northern Australia—are already experiencing heat that puts lives in danger, and most of the rest of the world can expect a taste of dangerous heat in the future. If nothing else, advances in modeling may make truly unprecedented heat waves easier to see coming. These are boom times for invasive species, which cause $423 billion in damage every year and factor into 60% of observed extinctions. Take invasive, stinging fire ants, which have established a stable beachhead in Europe, on Sicily. Seven percent of the continent is hospitable to the insect, but that figure could grow to 25% by midcentury. Fire ants in Indonesia. Photographer: Getty Images Fossil fuel emissions are making wildfires worse in many parts of the world, drying out vegetation and extending fire season. The rising risks are making apparent the need for better forest management than is typical in western North America. Suppressing fires indirectly cost British Columbia as much as $24 billion in 2021, a figure vastly greater than the price tag for pruning or burning away fire fuel. The number of US homes at a 5% or greater risk of wildfire damage could double over the next quarter-century, to 3.3 million, compared with the average from 2000 to 2018. Fire damage in Celista, British Columbia, in August. Photographer: Bloomberg Scrutiny of forest-based carbon credits continues to raise doubts about their effectiveness. Many of the world's biggest companies say they'll rely on the practice to net out their emissions. But an analysis from the University of California at Berkeley found that one leading program lacks transparency, uses unrealistic metrics for gauging carbon storage and gives developers too much flexibility. A commentary by three researchers in the journal One Earth puts the problem plainly: "Carbon offsets are incompatible with the Paris Agreement." The Ross Moore Lake wildfire in British Columbia in July. Photographer: Bloomberg Nudging people toward new behavior actually works. Researchers are constantly trying to invent ways to prompt better decision-making. In partnership with social scientists, Alibaba Group Holding Ltd.'s food delivery service, Eleme, changed the default option in its checkout process to no plastic cutlery, rewarding the choice with " green points" toward tree planting in China's desert. Overuse of groundwater, and its subsequent flow into oceans, is shifting the planet's axis—yes, the one it rotates on—eastward by 4.3 centimeters (1.7 inches) a year. Geologists read the Earth's layers of rock like a book, marking chapters of time into eras, periods and epochs. Where they find the strongest physical evidence for a massive geological change, they place a physical marker into the rock formation denoting the new chapter. In July a team of scientists settled on Crawford Lake in Ontario as proof that humanity has taken us into a new chapter: The lake's sediment holds unique traces of plutonium from nuclear bomb tests, heavy metals, microplastics and ash from burning fossil fuels that may prove that a new, human epoch, the Anthropocene Epoch, is underway. |
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