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US Fertility Rate Falls To All-Time Low

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著者: BeauHD

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アメリカの出生率が過去最低に達したことを示す報告書が発表されました。CDC(疾病管理及び予防局)のデータによると、2025年に米国で生まれた子供数は4,316,233人から3,606,400人に減少し、71万人に及ぶ差が出ています。この数字の変化には、経済的要因や文化的な影響、女性の教育と避妊手段の普及が関与していると考えられています。

マサチューセッツ大学ロサンゼルス校の人口研究センター所長であるマーサ・ベイリー博士は、「20代の若年層での出生率の減少が顕著です。これらの女性たちが遅くに子供を持つ可能性も考慮すべきです」と述べています。

また、10代の妊娠出産率が7%減少したことも注目されます。バイナ・アリソン医師は、「性行為の頻度が下がり、避妊手段の使用が増えていることから、青少年の妊娠率が低下していることが影響していると考えられます」と指摘しています。

この報告書にはネガティブな面もありますが、10代の出生率の減少は contraception の利用増加や堕胎手術へのアクセスにより子供出産を防ぐ努力が効果的であるという示唆があります。
An anonymous reader quotes a report from NPR: Women in the U.S. gave birth to roughly 710,000 fewer children last year compared with the nation's peak in 2007, according to preliminary data released (PDF) this week by the Centers for Disease Control and Prevention. Lead researcher Brady Hamilton, a demographer with the CDC's National Center for Health Statistics, said the latest one percent drop in "general fertility" from 2024 to 2025 is part of a long-running downward trend. "Since 2007, there's been a decline in the general fertility rate [in the U.S.] of 23%," Hamilton told NPR. The impact of that change in real numbers is sizable: In 2007, there were 4,316,233 babies born. Last year, even though the nation's population as a whole is larger, there were only 3,606,400 newborns. There's no consensus over why women and couples have shifted their behavior so significantly. Some experts point to economic factors, others say cultural influences, and better access to education and contraception for women are driving the change. "We're seeing big drops in fertility rates for young women, teenagers and women in their 20s," said economist Martha Bailey, head of the California Center for Population Research at the University of California, Los Angeles. "What's not yet clear is whether or not those same women will go on to have children later on." "People are having the number of children they want and that they can afford at a time that makes the most sense for them," she said. "What I don't think anyone is in favor of is a Handmaid's Tale type policy regime, where we're trying to talk families into having children they don't want." One silver lining in the data is the 7% decline in teen pregnancies in 2025. Bianca Allison, pediatrician and associate professor at the University of North Carolina School of Medicine, said: "What is actually affecting the birth rates are likely lower rates of teen pregnancy overall, which is in the context of higher use of contraception and lower sexual activity for youth, and then also continued access to abortion care."

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More Americans Are Breaking Into the Upper Middle Class

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著者: BeauHD

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米国人の多くが上流中間層に進出しています。アメリカ経済研究所(AEI)による報告書によると、2024年の時点で約31%の米国人が上流中間層に属しており、1979年時点の約10%から大幅な増加となっています。

上流中間層は、一家三人で2024ドル換算で13万3,000ドルから40万ドル程度の収入を持つ家族を指します。この報告書では資産や不動産などは考慮していません。

世代ごとの分析によると、ベビーブーム世代は裕福な生活を送るようになり、シルバーセキュリティと株式投資からの収益が支えになっています。ミレニアル世代も2008~2009年の金融危機の影響から回復し、安定した収入を得ています。

一方で、物価上昇や生活必需品の高値は多くの家族を財政的な不安定さに追いやっています。これらのコストは高収入家庭も苦しんでおり、多くの人にとって豊かさを感じていない理由となっています。

報告書では、収入に基づいて5つのグループに分類しており、上流中間層と裕福な2つが最も多くなりました。
More Americans have moved into upper-middle-class incomes over the past several decades (source paywalled; alternative source), with new research suggesting that group has grown sharply while the lower and core middle class have shrunk. The Wall Street Journal reports: In 2024, about 31% of Americans were part of the upper middle class, up from about 10% in 1979, according to a report released this year by the right-leaning American Enterprise Institute. There is no single, standard definition of middle class, or upper middle class, and what counts as a hefty income in one city can feel paltry in another. The AEI report, by Stephen Rose and Scott Winship, classified a family of three earning $133,000 to $400,000 in 2024 dollars as upper middle class. Households earning more were categorized as rich. The analysis looked just at incomes, not assets such as stocks or real estate. [...] The gains span generations. Many baby boomers, born to parents who grew up in the Great Depression, are living well on their savings, aided by steady Social Security checks and decades of stock-portfolio gains that they can now tap. Millennials, who everyone worried would be permanently set back by the 2008-09 financial crisis, are earning solid incomes, buying homes and surpassing their parents. Many families are surprised to find that they have moved into this new economic tier, and see themselves as comfortable, not rich. They tend to have jobs that are white collar but not flashy -- think accountants, not tech founders. This doesn't mean that all Americans are climbing the ladder. Entrenched inflation and higher prices on major necessities have pushed many families closer to the financial edge, or locked them out of homeownership. Those costs weigh on high-earning families too, and for many are the reason they don't feel wealthy. The AEI report divided families into five different groups by income. Three groups were in the middle: lower middle class, core middle class and upper middle class. The authors found that more families now fall into the two highest-earning groups -- upper middle class and rich -- and fewer fall into the three lower-earning categories.

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America's CIA Recruited Iran's Nuclear Scientists - By Threatening To Kill Them

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アメリカのCIAはイランの核開発に携わる科学者を暗殺する代わりに、彼らを米国へ defectさせる提案を行った。元スパイのケビン・チョーカー氏によると、Pentagonは当初、キリルチームによる暗殺作戦を検討していたが、CIAはこれら科学者の協力を得るための方法を探し、そのうちの75%は協力に同意した。チョーカーは、これらの科学者が米国から脅迫された場合、実際には彼らが殺害されても、重要な情報提供によりイランの核兵器開発計画を長年にわたる妨げたと主張している。

この作戦では、チョーカーは約10分間で科学者に自身の身元を説明し、米国への移住が可能であることを伝え、もし拒否された場合、暗殺される可能性があることを述べていた。しかし、実際には暗殺は行われておらず、多くの科学者が脅迫された結果、協力に応じたという。

この情報交換は2010年代のサイバー攻撃(スタックスネット)からオバマ政権の核合意、そして2025年のイラン原子力施設への米空爆まで、長年にわたるアメリカによるイラン核兵器計画への妨げに貢献したとチョーカーは主張している。
A former U.S. spy spoke to The New Yorker about "years of clandestine work for the C.I.A. — which, he said, had 'prevented Iran from getting a nuke'." [Kevin] Chalker told me that, as he understood it, the Pentagon had suggested running commando operations to kill key Iranian scientists, as Israel subsequently did. But the C.I.A. proposed recruiting those scientists to defect, as U.S. spies had once courted Soviet physicists. Chalker paraphrased the agency's pitch: "We can debrief them and learn so much more — and, if they say no, then you can kill them." (A more senior agency official confirmed the broad strokes of his account.) The White House liked the agency's idea, and [president George W.] Bush authorized the C.I.A. to conduct clandestine operations to stop Iran from building a bomb. The C.I.A. program that Chalker described to me became publicly known in 2007, when the Los Angeles Times reported on the existence of an agency project called Brain Drain. But the details of the "invitations" to Iranian scientists have not previously been reported... Chalker typically had about ten minutes to explain, as gently as possible, that he was from the C.I.A., that he had the power to secure the scientist and his family a comfortable new life in the U.S. — and that, if the offer was rejected, the scientist, regrettably, would be assassinated. (Chalker tried to emphasize the happier potential outcome.) Killing a civilian scientist would violate international law. The American government has denied ever doing it, and I found no evidence that the U.S. has carried out any such murders. A former senior agency official familiar with the Brain Drain project told me all that mattered was that Iranian scientists had believed they would be killed, regardless of whether the U.S. actually made good on the threat. And Israel had been conducting a campaign to assassinate Iranian scientists, which made the prospect of lethal reprisal highly plausible. Other former officials with knowledge of the project told me that the C.I.A. sometimes shared intelligence with Mossad which enabled its operatives to locate and kill a scientist. Such information exchanges were kept vague enough to preserve deniability if a more legalistic U.S. Administration later took office... [Chalker] is confident that those who rebuffed him were, in fact, killed — one way or another... One of Chalker's colleagues told me that, against the backdrop of so many Israeli assassinations, Chalker's interactions with Iranian scientists could almost be considered humanitarian — he had been "throwing them a lifeline." Of the many scientists he approached, three-quarters ultimately agreed to coöperate. Their 10,000-word article suggests Chalker may now be resentful the CIA didn't help him in a later unrelated lawsuit, noting it's "nearly unheard of for ex-spies to divulge their past activities." But Chalker also says he "helped obtain pivotal information that laid the groundwork for more than a decade of American efforts to disrupt the Iranian nuclear-weapons program, from the Stuxnet cyberattacks, which occurred around 2010 [destroying 1,000 uranium-enriching centrifuges], to the Obama Administration's nuclear deal, in 2015, to the U.S. air strikes on Iranian atomic-energy facilities in the summer of 2025."

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Rapid Snow Melt-Off In American West Stuns Scientists

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著者: BeauHD

🤖 AI Summary

アメリカ西部の異常な暖かさが雪解けを一気に引き起こし、主要な流域は記録的な低水準に陥っている。コロラド州大学の気候学者、ルス・シュマカー博士は「今年は以前と全く異なるレベルだ」と述べており、「データが残されているどの年も著しく下回っているので非常に心配だ」と指摘した。

温暖化による異常な暖かさにより、3月に入り一気に雪解けが始まり、全米西部の多くの観測点で平均以下となる雪水相当量を記録。グレート・ベイサン地区は16%、ローラー・コロナ地区(アリゾナ州大半とネバダ州一部)は10%以下だった。

この異常な暖かさにより、3月に予想される雪不足を期待していた水管理当局や気候専門家たちは幻滅。3月に入り、西部の主要な流域全体で雪不足状態が見られ、91%の観測点で平均以下の雪水相当量を記録した。

温暖化の影響により、カリフォルニア州の山岳地帯での積雪量も記録的に低く、高地はまだ白いものの低地はほとんど裸地に。気候学者のデイビッド・スワイン博士によると、この異常な暖かさは「アメリカ南部西部で観測された最も統計的に異様な極端な暖かさ事象の一つ」であると指摘した。

温暖化の影響が雪解けに及ぼす影響が深刻であり、来年の西部の雪解け量は大半の地域で記録的低下となる可能性がある。
Scientists say extreme March heat caused an unusually rapid collapse of snowpack across the American West that's leaving major basins at record or near-record lows. "This year is on a whole other level," said Dr Russ Schumacher, a Colorado State University climatologist. "Seeing this year so far below any of the other years we have data for is very concerning." The Guardian reports: [...] The issue is extremely widespread. Data from a branch of the US Department of Agriculture (USDA), which logs averages based on levels between 1991 and 2020, shows states across the south-west and intermountain west with eye-popping lows. The Great Basin had only 16% of average on Monday and the lower Colorado region, which includes most of Arizona and parts of Nevada, was at 10%. The Rio Grande, which covers parts of New Mexico, Texas and Colorado, was at 8%. "This year has the potential of being way worse than any of the years we have analogues for in the past," Schumacher said. Even with near-normal precipitation across most of the west, every major river basin across the region was grappling with snow drought when March began, according to federal analysts. Roughly 91% of stations reported below-median snow water equivalent, according to the last federal snow drought update compiled on March 8. Water managers and climate experts had been hopeful for a March miracle -- a strong cold storm that could set the region on the right track. Instead, a blistering heatwave unlike any recorded for this time of year baked the region and spurred a rapid melt-off. "March is often a big month for snowstorms," Schumacher said. "Instead of getting snow we would normally expect we got this unprecedented, way-off-the-scale warmth." More than 1,500 monthly high temperature records were broken in March and hundreds more tied. The event was "likely among the most statistically anomalous extreme heat events ever observed in the American south-west," climate scientist Daniel Swain said in an analysis posted this week. "Beyond the conspicuous 'weirdness' of it all," Swain added, "the most consequential impact of our record-shattering March heat will likely be the decimation of the water year 2025-26 snowpack across nearly all of the American west." Calling the toll left by the heat "nothing short of shocking," Swain noted that California was tied for its worst mountain snowpack value on record. While the highest elevations are still coated in white, "lower slopes are now completely bare nearly statewide."

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