Wednesday 13th May 2026
    Difficulty: Easy

    Balloons (#1,272)

    Photo by <a href="https://unsplash.com/@lucaupper?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Luca Upper</a>
    Photo by Luca Upper (Unsplash)

    1. Which scientist invented rubber balloons?

    2. For how long can balloons marked as ‘biodegradable’ last in the marine environment?

    3. How many sea mammals are killed as a result of eating or otherwise ingesting deflated rubber balloons, according to The Balloon Council?

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