askscience

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If a vaccine requires a booster to reach full immunity, why wouldn’t the initial shot and then constant exposure to covid in public accomplish the same? Seems the immune system would increase immunity in constant exposure the same way it increases with exposure via a booster	1
Anyone have the process for making tabby? (Tabby is a form of concrete made in the SE US from oyster shells)	1
When you stamp a pattern into leather, why is it permanent? Skin is rebounds by design. Is this a characteristic of tanning? Is it related to why it I sit on a mesh chair in shorts my thighs hold the pattern of the mesh for a bit? Could permanent skin embossing be possible or the next “tattoo”?	1
Why isn’t there yet a safe and effective pesticide I can put on the back of my neck and be left alone by all insects (and spiders) for a month?	1
Cloning a dog is now a commercially available option for $50k. Usually tissue is taken from a living animal though. Could a dog be cloned that died and was buried a few years ago?	1
I frequently use 80/20 Inc. extruded aluminum t-slot beams with 316 stainless hardware. When I loosen a real tight screw, it smells strongly and distinctly like a freshly burnt match. Why?	1
Why are elephant/human/ape teats up high on the chest, while most all other mammals way down low by their stomach/groin?	1
Painted a freezer interior with non-water based exterior enamel paint. Started to rain on me. Some water leaked in & the paint seems to be not drying where water contacted it despite drying it at with a fan & dehumidifiers for days. Why won’t it dry (and how do I fix it)	1
If electricity “moves” at the speed of light why can I perceive a dip in lights when my AC kicks on?	1
If I have a bottle of 100% Argon at 2k psi and a bottle of 100% CO2 at 2k psi, how do I either get a mixed supply line or fill a third empty bottle at 25% Argon and 75% CO2? Dual regulators? If filling a bottle, sequentially by weight or pressure?	1

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