Yoriyuki Yamada knows what it’s like to face a tough crowd. A decade ago, as a young landscape architect at Japanese construction giant Kajima, he tried to sell others on the idea of rooftop gardens. He told them how the greenery would act as a buffer against the summer heat, reducing energy costs, and would make our cities better places to live in. He talked about countering the heat-island effect, which is caused by buildings and streets in a city trapping heat, and had the data to back it up. “In the end, most companies opted for a low-cost…
Yoriyuki Yamada among the green landscaping of Kajima’s office in Tokyo
Bees are part of Kajima’s biodiversity action plan
Bees target blossoms and other plants
Oasis 21 park in downtown Nagoya
Yamada spots his bees in the treetops
Kajima’s iPhone app recognises the sounds of birds, frogs and crickets
Yamada maps the bees’ flight
Kajima staff hold meetings in the atrium
Greenery has transformed Kajima
Yamada opens a hive containing 10,000 bees
School children help to make honey
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