Science
Exploring "Why" questions about Science
484 articles
Why are pregnant women restricted from roller coasters, hot tubs, flights, etc?
Something tells me that subjecting a fragile developing fetus to large gravitational forces isn't a great idea. Nor is the general large increase in blood pressure.
why too cold things sometimes are felt like hot things?
For your sensory system something that is very hot vs something that is very cold is very similar response. You get the same systems responding to both situations. Your body thinks a cold burn and a h
Why isn’t solar power the most used source for electricity?
Because it's the least dense form of energy available to us. You can only get about 150 watts per square meter out of sunlight. That's barely enough to run a lightbulb.
Why did the US and Soviets continue to expand their stockpiles during the cold war, even after each side had the retaliatory power to obliterate the others’ industrial centers many times over?
The primary reason was so that they would still have enough to obliterate the other one even if the other one launched a surprise attack and destroyed most of them. Massively simplified, if the US thi
Why do Humans (and most mammals) have individual teeth instead of a beak or solid bony structure?
Only reason I can think of is, if one of em breaks, we can still chew
Why is wheat bread considered more healthy than white, especially to those dieting.
white bread is made from white flour, which is flour *without* pretty much everything that naturally makes flour a good thing for us. nutrients, vitamins and especially fibres. they get shifted out of
Why does air feel cooler when it’s moving when energy/movement creates heat?
Our bodies are constantly radiating heat. Air, being a good insulator, forms a hot-bubble around us, like a blanket. When the wind blows, it brings cooler air against our skin and removes the air we'v
Why is there an absolute zero, but not really an exact maximum temperature?
At Absolute Zero, molecular motion comes to a complete stop. You can't get lower than that. A maximum amount of molecular motion has yet to be established, so no maximum temperature has yet been deter
Why does the IRS let people go years/decades without filing their taxes but then audit people that do file their taxes on time? Wouldn’t their energy be better spent going after those that have W2s…
For the large part, a lot of individuals who don't file in a given year likely have paid more in taxes than they owe, or owe a relatively modest amount. Those people, even if they did something wrong
Why haven’t people as a whole adapted to the cold? We have adpated to the sun by the pigment in our skin changing colour depending on your exposure to sunlight.
Human's primary form of adaptation is the use of technology. So we have adapted to the cold by inventing insulated shelter, controlling fire, and making clothing.