毎週水曜の夜は、英語に親しむ「英活」の時間。ビジネスパーソンから英語教師、英語学習者の知的好奇心を刺激する番組です。 「今週のニュース」では、「英語と経済」を同時に学びます。『Nikkei Asia』(日本経済新聞社)の英字記事で、「時事英語」や「ビジネス英語」など、生きた英語をお伝えします。 『日本経済新聞』水曜夕刊2面「Step Up ENGLISH」と企画連動しています。
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World’s largest plant is a vast seagrass meadow in Australia
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Manage episode 332848501 series 2530089
Sisällön tarjoaa レアジョブ英会話. レアジョブ英会話 tai sen podcast-alustan kumppani lataa ja toimittaa kaiken podcast-sisällön, mukaan lukien jaksot, grafiikat ja podcast-kuvaukset. Jos uskot jonkun käyttävän tekijänoikeudella suojattua teostasi ilman lupaasi, voit seurata tässä https://fi.player.fm/legal kuvattua prosessia.
Scientists have discovered the world's largest plant off the Australia coast — a seagrass meadow that has grown by repeatedly cloning itself. Genetic analysis has revealed that the underwater fields of waving green seagrass are a single organism covering 70 square miles (180 square kilometers) through making copies of itself over 4,500 years. The research was published in Proceedings of the Royal Society B. Scientists confirmed that the meadow was a single organism by sampling and comparing the DNA of seagrass shoots across the bed, wrote Jane Edgeloe, a study co-author and marine biologist at the University of Western Australia. A variety of plants and some animals can reproduce asexually. There are disadvantages to being clones of a single organism — such as increased susceptibility to diseases — but “the process can create ‘hopeful monsters’” by enabling rapid growth, the researchers wrote. The scientists call the meadow of Poseidon's ribbon weed “the most widespread known clone on Earth," covering an area larger than Washington. Though the seagrass meadow is immense, it's vulnerable. A decade ago, the seagrass covered an additional seven square miles, but cyclones and rising ocean temperatures linked to climate change have recently killed almost a tenth of the ancient seagrass bed. This article was provided by The Associated Press.
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2145 jaksoa
MP3•Jakson koti
Manage episode 332848501 series 2530089
Sisällön tarjoaa レアジョブ英会話. レアジョブ英会話 tai sen podcast-alustan kumppani lataa ja toimittaa kaiken podcast-sisällön, mukaan lukien jaksot, grafiikat ja podcast-kuvaukset. Jos uskot jonkun käyttävän tekijänoikeudella suojattua teostasi ilman lupaasi, voit seurata tässä https://fi.player.fm/legal kuvattua prosessia.
Scientists have discovered the world's largest plant off the Australia coast — a seagrass meadow that has grown by repeatedly cloning itself. Genetic analysis has revealed that the underwater fields of waving green seagrass are a single organism covering 70 square miles (180 square kilometers) through making copies of itself over 4,500 years. The research was published in Proceedings of the Royal Society B. Scientists confirmed that the meadow was a single organism by sampling and comparing the DNA of seagrass shoots across the bed, wrote Jane Edgeloe, a study co-author and marine biologist at the University of Western Australia. A variety of plants and some animals can reproduce asexually. There are disadvantages to being clones of a single organism — such as increased susceptibility to diseases — but “the process can create ‘hopeful monsters’” by enabling rapid growth, the researchers wrote. The scientists call the meadow of Poseidon's ribbon weed “the most widespread known clone on Earth," covering an area larger than Washington. Though the seagrass meadow is immense, it's vulnerable. A decade ago, the seagrass covered an additional seven square miles, but cyclones and rising ocean temperatures linked to climate change have recently killed almost a tenth of the ancient seagrass bed. This article was provided by The Associated Press.
…
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