Nearly 500 ways to make a yoga mat sandwich

If you've planked on a yoga mat, slipped on flip-flops, extracted a cell phone from protective padding or lined an attic with foam insulation, chances are you've had a brush with an industrial chemical called azodicarbonamide, nicknamed ADA. In the plastics industry, ADA is the “chemical foaming agent” of choice. It is mixed into polymer plastic gel to generate tiny gas bubbles, something like champagne for plastics. The results are materials that are strong, light, spongy and malleable.

Stephanie Ebersole-Balderson (@mrsbalderson) / X

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