Science
Exploring "Why" questions about Science
482 articles
Why is it always so cold in the hospital?
Bacteria and viruses don't survive as long on cold surfaces. Making it a bit chilly saves lives from infection.
Why do electric cars have such a low top speed for their horsepower?
Perhaps they are more concerned with efficient power consumption than going faster than a Lambo?
Why is it whenever I stand up too fast from sitting on the couch, my vision becomes slightly impaired (or I start seeing only black) and I become dizzy?
Interestingly, the Mayo Clinic offers a [description of that dizziness, but no reason for it](_URL_1_) My guess would be it's a combination of two things. One is the sudden movement of standing which
Why does a full suspension mountain bike require more energy to pedal than a hard tail?
In full suspension mountain bikes there is a storage for kinetic and potential energies in the suspension device (e.g.) the spring. When you are pedaling on flat ground you exert a force and some of t
Why didn’t evolution decide our teeth can only be maintained through dental chemicals and treatment?
During most of human history, we ate almost no sugars at all (hunter gatherer societies have very few sources of carbohydrates, i.e. complex sugars). It is carbohydrates and sugars that feed the bacte
Why are my muscles sore after jumping in cold water?
From what I understand, our bodies defenses against hypothermia is to shiver. This involves involuntary muscle contractions to generate heat. These muscles contractions still can cause muscle soreness
Why are bodily expressions like urine, feces and semen all relatively controllable, but periods just come a flowin’ whenever they feel like it, without any say in the matter?
There's no sphincter there. There's vaginal muscles but if you tell girls on their periods to flex them you'll get stabbed in the face.
Why can’t pilots see when a laser hits them?
Lasers spread out the farther they travel. That "tiny dot of light" isn't so tiny after it travels 1000 feet through the air. If it hits the plexiglas cockpit window, it diffuses out even more.
Why can women experience multiple orgasms, but men just go limp after one?
Evolutionarily, it is beneficial for a male to have a refractory period.the penis is shaped ina way that scoops out semen that is already in the vagina. if a man ejaculates and then immediately resume
Why do I get light-headed when I stretch?
When you stretch you are tightening your muscles in your limbs, because of this extra space your heart pumps blood into these areas causing a loss of blood flow to your brain which causes you to be li