Home Ask question Search Order By: ActiveCategoryClear Filter 1 Ans Why does the space between ceramic tiles on the floor (where the grout is) often turn almost black when most dirt outside is a light brown? If the dark coloring comes from dirt transferred by shoes, shouldn’t it turn the color of light brown dirt? 179 views 1 Ans Why are convegent lens used for amplification? 239 views 2 Ans eli5 Why do gnats fly in clusters? 305 views 6 Ans Why do wood wardrobes randomly make crackling noises? 450 views 4 Ans How do we know that donation money end up where they are supposed to? 587 views 6 Ans What do scientists mean when they say “we don’t know why we need to sleep”? 429 views 5 Ans How does recycling deal with food and junk on bottles and cans? 423 views 1 Ans why is it that people with food allergies/sensitivity aren’t affected in utero? 248 views 6 Ans Eli5 why are there different races? 446 views 3 Ans Why scientists are not able to 100% replicate breast milk to give to infants in case of a mother not being able to breast feed? 0 views 3 Ans Why scientists are not able to 100% replicate breast milk to give to infants in case of a mother not being able to breast feed? 399 views 1 Ans How come when people have acne on their cheek, why can’t they feel the acne from the inside of their mouth? 192 views 1 Ans What is ‘baby brain’? 255 views 3 Ans Eli5; why does saliva taste bad in the morning? 388 views 7 Ans How were film negatives inverted for viewing before the rise of digital scanners? 450 views 2 Ans In a 70F (21C) room, why does poor circulation result in feet that feel much colder (perhaps 45F/7C)? 289 views 9 Ans How does the current/source know that the circuit has been closed? 656 views 9 Ans eli5: How are we accurately able to study far off cosmic objects if our primary source of information is from light (that sometimes has traveled to us for 1000’s of years). Am I missing something? 519 views 3 Ans Eli5 What is glucagon and how does it work? 294 views 3 Ans What triggers a cytokine storm in your immune system? 312 views « Previous 1 2 … 2,376 2,377 2,378 2,379 2,380 … 3,197 3,198 Next » Question and answer is powered by anspress.net
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