>AI can guess your sexuality
AI可憑照片判斷性取向
Artificial intelligence (AI) can accurately guess whether people are gay or straight based on photos of their faces, according to new research suggesting that machines can have significantly better "gaydar" than humans. The study from Stanford University found that a computer algorithm could correctly distinguish between gay and straight men 81% of the time, and 74% for women. It also found that gay men and women tended to have "gender-atypical" features, expressions and "grooming styles", essentially meaning gay men appeared more feminine and vice versa. The data also identified certain trends, including that gay men had narrower jaws, longer noses and larger foreheads than straight men, and that gay women had larger jaws and smaller foreheads compared to straight women.
一項(xiàng)新研究顯示，人工智能可以通過(guò)人們面部的照片精確推測(cè)出照片中的人是同性戀還是異性戀。該研究認(rèn)為，機(jī)器的"同志雷達(dá)"比人類要準(zhǔn)得多。這項(xiàng)斯坦福大學(xué)的研究發(fā)現(xiàn)，計(jì)算機(jī)算法能正確區(qū)分直男與男同性戀，準(zhǔn)確率高達(dá)81%，對(duì)女性性取向判別的準(zhǔn)確率為74%。研究還發(fā)現(xiàn)，同性戀人士往往具有"非典型性別"特征、表情和"打扮風(fēng)格"，也就是說(shuō)男同性戀看起來(lái)較女性化，女同則反之。研究數(shù)據(jù)還發(fā)現(xiàn)了某些趨勢(shì)，包括：相較直男，男同性戀的下巴更窄、鼻子更長(zhǎng)、前額更寬；比起直女，女同性戀的下巴更寬、前額更窄。

>People can live up to 115
研究:人類壽命上限115歲
Researchers claim to have discovered the maximum age "ceiling" for human lifespan - women live to a maximum of 115.7 years, while men can hope for 114.1 years at the most. Despite the growing life expectancy, as a result of better nutrition, living conditions and medical care, Dutch scientists have said our longevity cannot keep extending forever. Lifespan is the term used to describe how long an individual lives, while life expectancy is the average duration of life individuals in an age group can expect to have - a measure of societal wellbeing. The research by statisticians at Tilburg and Rotterdam's Erasmus universities said, however, there were still a few people who have bent the norm, like French woman Jeanne Calment who died at the ripe old age of 122 years and 164 days in 1997.
研究人員稱，他們發(fā)現(xiàn)了人類壽命的年齡"天花板"，女性最多能活到115.7歲，而男性則為114.1歲。荷蘭科學(xué)家表示，雖然更好的營(yíng)養(yǎng)條件、生活環(huán)境和醫(yī)療水平提高了人類的預(yù)期壽命，但是人類的壽命不會(huì)無(wú)限延長(zhǎng)。壽命是描述一個(gè)人能活多久的術(shù)語(yǔ)，而預(yù)期壽命是指特定年齡段人群的平均預(yù)計(jì)壽命，是社會(huì)福利的一種衡量標(biāo)準(zhǔn)。蒂爾堡大學(xué)和鹿特丹伊拉斯姆斯大學(xué)的統(tǒng)計(jì)學(xué)家開展的研究稱，然而還是有少數(shù)人打破了這一常規(guī)。比如，法國(guó)人雅娜?卡爾芒就活了122歲零164天，她于1997年去世。

>Plastic fibers in tap water
多國(guó)自來(lái)水被塑料污染
Microplastic contamination has been found in tap water in countries around the world, leading to calls from scientists for urgent research on the implications for health. Scores of tap water samples from more than a dozen nations were analyzed by scientists for an investigation by nonprofit organization Orb Media. Overall, 83% of the samples were contaminated with plastic fibers. The US had the highest contamination rate, at 94%. Lebanon and India had the next highest rates. European nations including the UK, Germany and France had the lowest contamination rate, but this was still 72%. "We don't know what the [health] impact of microplastic is," said Anne Marie Mahon at the Galway-Mayo Institute of Technology. Microplastics can attract bacteria in sewage. Mahon said: "Some studies have shown there are more harmful pathogens on microplastics downstream of wastewater treatment plants."
全球多個(gè)國(guó)家的自來(lái)水被發(fā)現(xiàn)受到塑料微粒污染，科學(xué)家呼吁就其對(duì)健康的影響開展緊急研究。參與非營(yíng)利組織Orb Media的一項(xiàng)調(diào)查的科學(xué)家們對(duì)來(lái)自10余個(gè)國(guó)家的大量自來(lái)水樣本進(jìn)行了分析?？傮w來(lái)說(shuō)，83%的樣本受到了塑料纖維的污染。美國(guó)自來(lái)水的污染率最高，達(dá)94%。污染率第二高的國(guó)家是黎巴嫩和印度。英國(guó)、德國(guó)、法國(guó)等歐洲國(guó)家的污染率最低，但其數(shù)值仍高達(dá)72%。高威梅雅理工學(xué)院的馬洪表示："我們不清楚塑料微粒對(duì)健康會(huì)有什么影響。"塑料微粒會(huì)吸引污水中的細(xì)菌。馬洪稱，部分研究已顯示，污水處理廠下游的塑料微粒中的有害病原體更多。

>Grizzly bears go vegetarian
氣候變暖使灰熊改吃素
Grizzly bears have stopped eating salmon in favor of elderberries after being forced to make a choice due to climate change. Warming temperatures meant that the berries are ripening earlier than usual, at exactly the same time as the freshwater streams on Alaska's Kodiak Island are overflowing with sockeye salmon. The island's brown bears typically feed first on salmon in early summer, followed by elderberries in late August and September. A study from the Oregon State University found that during the unusually warm summer of 2014, the bears, which would traditionally kill up to 75% of the salmon, were nowhere to be seen near the streams. Instead, they were in the hills busy munching on berries. Biologists warned that changes caused by a warming planet were behind the bears' unusual behavior and could affect the entire ecosystem. The researchers found that the forests around the streams suffered because the bears' fish carcasses were no longer there to enrich the soil.
由于氣候變化，灰熊被迫做出抉擇，放棄鮭魚改吃接骨木果。氣溫上升使得這種漿果的成熟期比平時(shí)提前，與阿拉斯加科迪亞克島的淡水河流里擠滿了紅鮭的時(shí)間完全重合。科迪亞克島上的棕熊往往在夏初先以鮭魚為食，然后在8月末和9月吃接骨木果。俄勒岡州立大學(xué)進(jìn)行的一項(xiàng)研究發(fā)現(xiàn)，在2014年，夏季異常溫暖，但河流旁卻不見灰熊的蹤影。通常來(lái)說(shuō)，灰熊會(huì)吃掉高達(dá)75%的鮭魚。但它們一反常態(tài)，跑到山上大吃漿果。生物學(xué)家警告稱，全球變暖所帶來(lái)的變化是灰熊的反常行為背后的原因，或?qū)⒂绊懻麄€(gè)生態(tài)系統(tǒng)。研究人員發(fā)現(xiàn)，因?yàn)闆](méi)有灰熊吃剩的魚骸來(lái)給土壤增肥，河流周圍的森林已經(jīng)受到了影響。

Find more audio news on the China Daily app.