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Subscription failed Subscribe for free Thank you for subscribing! 9 hours ago - Energy & Environment World ocean temperatures in 2021 were hottest ever recorded Andrew Freedman Andrew Freedman, author of Generate Expand chart Data: Cheng, L. J, and Coauthors, 2022; Chart: Jared Whalen/Axios World ocean temperatures in 2021 were the hottest ever recorded by humans, according to a new peer-reviewed study. Driving the news: The research ties the warming trend conclusively to human emissions of greenhouse gases from the burning of fossil fuels, such as coal and natural gas. Why it matters: The oceans store at least 90% of the extra heat retained in the atmosphere from human-induced greenhouse gas emissions, and ocean warming is increasingly tied to extreme weather and climate events. The new study -- published in Advances in Atmospheric Sciences -- presents the first analysis of ocean heat content through 2021 from two different data sets. * Each clearly shows ocean temperatures reached new heights in 2021, continuing their sharp increase during the past several decades. Details: The study found that the period since 1985 has seen an eightfold increase in ocean heat content when compared to the 1958 to 1985 period, and each decade since 1958 has been warmer than those that preceded it. * Seawater expands as it warms, yielding higher sea levels, more marine heat waves that can kill sensitive coral reefs, and other ecosystem changes. * Warmer waters can also yield faster intensification of tropical storms and hurricanes, as was seen with Hurricane Ida last year, and help boost heavy precipitation and fuel severe weather well inland, as occurred in the Midwest during December of last year. What they're saying: "The oceans will continue to warm until net carbon emissions go to zero. Ocean warming is destabilizing Antarctic ice shelves and threatens massive (meters) of sea level rise if we don't act," said study co-author Michael Mann of Penn State University, in an email. Go deeper Erin Doherty Jan 11, 2022 - World Thousands without power in Buenos Aires amid heat wave People sit in a cafe in Buenos Aires, Argentina, on Jan. 11 during a heat wave. Photo: Florencia Martin/picture alliance via Getty Images Thousands of homes are without power in Argentina's capital Buenos Aires due to a large-scale power outage, Reuters reports. Why it matters: The power outage comes as a heat wave scorches the city, bringing temperatures above 104degF, some of the highest in the world. Go deeper (<1 min. read) Alayna Treene, author of Sneak Peek 2 hours ago - Politics & Policy Schumer finds loophole to advance elections reform package Photo: Drew Angerer/Getty Images Democratic leaders have found a mechanism to enable them to bypass an initial Republican filibuster and debate the party's sweeping elections reform bills, according to a new leadership memo obtained by Axios. Why it matters: The strategy is the latest example of how Democrats are seeking new ways to try to bypass Senate procedures that are blocking their agenda. But the ultimate outcome will likely be the same: insufficient support to change the 60-vote threshold needed to pass sweeping voting rights reforms. Go deeper (2 min. read) Andrew Solender 2 hours ago - Politics & Policy Jan. 6 committee seeks to interview Kevin McCarthy House Minority Leader Kevin McCarthy. Photo by Mark Wilson/Getty Images The Jan. 6 select committee is seeking an interview with House Minority Leader Kevin McCarthy (R-Calif.) about his communications with former President Trump. Why it matters: McCarthy is the highest-ranking elected official the committee has asked for information. It's a clear sign that the panel sees nobody as off-limits. Go deeper (1 min. read) Axios gets you smarter, faster with news & information that matters. Copyright Axios Media, 2022 About About Axios Advertise with us Careers Events Axios on HBO Axios HQ Privacy and terms Online tracking choices Contact us Subscribe Axios newsletters Axios app Axios podcasts Courses Earn Axios rewards