Science
Microplastics & Pollution Quiz ♻️
They're in your blood, your food, and your lungs — the invisible pollution crisis.
They're in your blood, your food, and your lungs — the invisible pollution crisis.
The average person ingests approximately 5 grams of plastic per week — equivalent to a credit card — through food, water, and air. Microplastics (particles under 5mm) have been found on the summit of Mount Everest, in the deepest ocean trenches, in Arctic sea ice, and inside human blood, lungs, and placentas. This 50-question quiz digs into what microplastics are, where they come from, how they affect the body, and what pollution more broadly is doing to our planet.
Each round presents 10 randomized multiple-choice questions drawn from a pool of 50, so every playthrough is different. You get instant feedback with explanations after each answer, plus a shareable score at the end.
You'll explore the definition and sources of microplastics, what science has found inside the human body, the scale of ocean plastic pollution including the Great Pacific Garbage Patch, the dangers of PFAS "forever chemicals," the hidden toll of air, light, and noise pollution, e-waste statistics, and the solutions — from The Ocean Cleanup project to circular economy policy — being deployed around the world.
Research is ongoing but concerning. Microplastics have been detected in human blood, lungs, placentas, and breast milk. Studies suggest they can carry toxic chemicals, act as endocrine disruptors, cause inflammation, and potentially damage cells. A 2024 study in the New England Journal of Medicine found microplastics and nanoplastics in arterial plaques, linking them to higher risk of heart attack and stroke. While definitive long-term human health data is still emerging, the precautionary evidence is substantial.
Estimates suggest there are over 5 trillion pieces of plastic in the ocean, weighing more than 250,000 tonnes at the surface alone. If stretched end to end, those pieces could circle Earth more than 400 times. The Great Pacific Garbage Patch — the most famous accumulation zone — covers an area twice the size of Texas and contains around 80,000 tonnes of plastic, mostly in the form of microplastics rather than the "island of trash" that is often imagined. Roughly 8–12 million tonnes of new plastic enter the ocean every year.
Cleaning up microplastics is one of the greatest environmental challenges. The Ocean Cleanup project, founded by Boyan Slat, uses passive systems in the open ocean and river interceptors to collect plastic before it enters the sea. However, critics note that microplastics already dispersed throughout the water column and ocean floor may be impossible to recover at scale. Experts broadly agree that prevention — stopping plastic from entering the environment in the first place — is far more effective than cleanup. This means better waste management, extended producer responsibility laws, and reducing single-use plastic production.
Last updated: March 2026