Can You Put Aluminum Foil in the Microwave?
Usually no. Learn why foil sparks at sharp edges, what the FDA and USDA actually say, and the only situations where a small, smooth piece may be okay.

Evidence-based, easy-to-understand science explanations for curious minds, from everyday mysteries to the weirdest wonders of our world.
Dive into fun, real science across different areas.
Big questions people keep asking, answered with sources.
See all questions →Usually no. Learn why foil sparks at sharp edges, what the FDA and USDA actually say, and the only situations where a small, smooth piece may be okay.
Why do onions make you cry? Learn how cutting creates an eye-irritating sulfur gas, what the eye does next, and which onion tips have real evidence.
Yes, slightly. Learn what potassium-40 is, where the 0.1 microsievert banana dose comes from, and why it is an imperfect yardstick for everyday radiation.
Published per-prompt figures run from 0.26 mL to 519 mL. See why they differ, where the bottle claim came from, and what direct and indirect water mean.
In-depth, research-based explanations of how things actually work.
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Is Godzilla real? No, it is a 1954 Toho movie monster. Here is the square-cube arithmetic, real giants, and why something that big is extremely unlikely.

The loudest animal on Earth is the sperm whale, with a catch about decibels in water. Plus Krakatoa, the 194 dB limit, and the disputed Godzilla roar recipe.

Godzilla atomic breath, tested with real numbers: fat, fission, eels, beetles and why air wrecks a beam. The fuel works on paper. Delivery is what fails.
Try hands-on science tools and simulations right in your browser.

Change the mass of the star and the distance of the planet, then watch how the orbit and the year length respond.
Try the Gravity Simulator →Curiosity deserves reliable answers, so we show our sources and our limits.