We composted 'biodegradable' balloons. Here's what we found after 16 weeks
Monday, August 17, 2020 - 09:01
in Earth & Climate
After 16 weeks in an industrial compost heap, we unearthed blue and white balloons and found them totally unscathed. The knots we spent hours painstakingly tying by hand more than four months ago were still attached, and sparkly blue balloons still glinted in the sun.