環境 水を節約するための 3 つの賢明な方法:3 thoughtful ways to conserve water/ラナ・マザレ According to the UN, nearly one in three people worldwide live in a country facing a water crisis, and less than five pe... 環境
環境 若い科学者のきれいな水の探求:A young scientist’s quest for clean water/ディーピカ・クルップ Deepika Kurup has been determined to solve the global water crisis since she was 14 years old, after she saw kids outsid... 環境
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