Everyday Mysteries Explained

What we verified before publishing

AI-generated content may contain mistakes. Check the sources below before relying on important information.

The following claims were verified through Perplexity Sonar before the questions were finalised. The host can reference any of them during play:

• Onions make us cry because cutting them releases a chemical called lachrymatory factor, which reacts with the water in our eyes to form a mild sulfuric acid.
• Popcorn pops because the water inside the kernel turns into steam, building pressure until the hard outer shell bursts and the starch expands into a fluffy foam.
• Airplane ears feel blocked because the Eustachian tube cannot equalize the pressure between the middle ear and the cabin quickly enough during rapid altitude changes.
• Soap removes grease because its molecules have a hydrophobic tail that attaches to oil and a hydrophilic head that binds to water, allowing the grease to be washed away.
• Ice floats on water because its molecules form an open, hexagonal crystal lattice when frozen, which makes solid ice less dense than liquid water.
• Mirrors fog up because warm, humid air from a shower hits the cooler surface of the glass, causing the water vapor to condense into tiny liquid droplets.
• Spicy food feels hot because capsaicin binds to TRPV1 receptors on the tongue, which are the same receptors that detect actual heat, tricking the brain.
• Phone batteries age because chemical reactions and charge cycles cause lithium ions to get trapped or electrode materials to crack, reducing the battery's capacity over time.
• Bread rises because yeast consumes sugars in the dough and releases carbon dioxide gas, which gets trapped in the gluten network and expands during baking.
• Rainbows appear when sunlight is refracted, reflected, and dispersed by water droplets in the atmosphere, separating the light into its component colors.

Sources consulted during research:

• Grounded research source — https://www.poison.org/
• Grounded research source — https://www.poppedstores.com/
• Grounded research source — https://www.directearcare.co.uk/
• Grounded research source — https://www.biolinscientific.com/
• Grounded research source — https://www.britannica.com/
• Grounded research source — https://www.modernsplash.co.uk/
• Grounded research source — https://www.livescience.com/
• Grounded research source — https://www.itsourtech.com/