How Onions ACTUALLY Make You Cry (And How to Stop Them) The Surprising Physics Behind Onion Tears: A Fresh Discovery from the Lab By Dr. Raj Patel | Global1.news Science Desk | Mumbai Published: May 22, 2026 If you've ever chopped an onion and found yourself blinking through a flood of tears, you're not alone. For decades, scientists have known the chemical culprit behind those stinging...