Environmental scientist studying river ecosystems
Freshwater biologist, formerly at Kyoto University. I run citizen-science water-quality monitoring with local schools.
Runs a school-led water-quality monitoring network across 12 schools in the Yodo basin.
Kyoto University, 2018. Specialism in river macroinvertebrate communities.
Expand bottle deposit programs to cover all consumer packaging—cans, bottles, cartons, and containers. A small refundable deposit (10-25 cents) creates a financial incentive to return packaging for recycling rather than tossing it in the trash.
Design and publish open-source plans for hydroponic systems built from common hardware store materials (PVC pipes, plastic bins, aquarium pumps). Total cost under $50. Include step-by-step video tutorials and a community forum for troubleshooting. Projects like OpenAg and Farmbot have shown open-source agriculture works.
Permanently close select downtown streets to private vehicles, converting them to pedestrian plazas, bike lanes, and transit-only corridors. This reduces emissions directly while making walking, cycling, and transit more attractive. Cities like Oslo, Barcelona (superblocks), and Ghent have seen air quality improvements and increased retail activity.
Replace single-species, even-aged stands with mixed-species, mixed-age "mosaic" forests so that climate, pest, and drought risk is spread across many trees rather than concentrated on one vulnerable species. The approach is being pushed by the French ONF as the standard response to dieback and is gradually being applied wherever new plantings are made.
Impose a fee on demolishing buildings below a certain age and require developers to demonstrate that renovation is not viable before granting demolition permits. The embodied carbon in an existing structure is already "spent" — demolishing it releases that carbon and requires new embodied carbon for the replacement. Basel-Stadt is implementing a version of this: a compensation fee for demolishing buildings younger than 60 years, with revenues funding a Scope 3 emissions compensation fund.