The facts

  1. Birnbaum was recognised for research on persistent organic pollutants and endocrine-disrupting chemicals, including how exposure during sensitive stages affects health. [1]

  2. Barbier was recognised for work valuing natural capital and ecosystem services and informing green-economy policy and investment. [1]

  3. Each laureate receives US$500,000, a certificate and a trophy. [1]

  4. Kyodo’s 28 October report confirms the completed ceremony and both recipients. [2]

Relevant context

The prize recognises established work; the October ceremony does not change the June announcement date or establish a new research finding. [1][2]

Sources

References support the numbered facts above. Source checks: 29 Oct 2026, 05:36 UTC.

  1. BLUE PLANET PRIZE 2026: ANNOUNCEMENT OF PRIZE LAUREATES

    Asahi Glass Foundation via Foreign Press Center Japan · Primary source · 10 Jun 2026

    Issuer’s laureate announcement distributed by FPCJ.

  2. 秋篠宮ご夫妻、表彰式に ブループラネット賞

    Kyodo News via Livedoor · Reporting · 28 Oct 2026

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