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More than half the world lives in urban areas, but in Japan 92% does. This creates challenges in terms of sustainability, but Japan has found a solution: It's using the innovations of the Fourth Industrial Revolution to create new kinds of cities, smart cities. You don’t need to be a megacity to be a smart city. In Japan, smaller communities are also using ground-breaking technology, like the Internet of Things and big ideas like the sharing economy to become more sustainable. Two Japanese eco-towns Fujisawa Sustainable Smart Town was built on the site of an old Panasonic factory. This new ...

Abstract One big challenge for long-lived inverted perovskite solar cells (PSCs) is that commonly used metal electrodes react with perovskite layer, inducing electrode corrosion and device degradation. Motivated by the idea of metal anticorrosion, here, we propose a chemical anticorrosion strategy to fabricate stable inverted PSCs through introducing a typical organic corrosion inhibitor of benzotriazole (BTA) before Cu electrode deposition. BTA molecules chemically coordinate to the Cu electrode and form an insoluble and polymeric film of [BTA-Cu], suppressing the electrochemical corrosion a...

 E-Mail IMAGE: Researchers aboard the research vessel Mirai watched water vapor rise from the Chukchi Sea, resembling the mist that rises from a hot bath in a cold room. The Pacific Ocean... view more  Credit: Photo by Jun Inoue, National Institute of Polar Research, CC BY-SA. Experts in Japan recently discovered that atmospheric conditions near Alaska can affect sea ice conditions in the Arctic Ocean months later. The team used various data, including ship-based data from 2018, to uncover how a single atmospheric event over the northern Pacific Ocean caused significantly delayed se...