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? 140 views 1 Ans Why are convegent lens used for amplification? 198 views 2 Ans eli5 Why do gnats fly in clusters? 246 views 6 Ans Why do wood wardrobes randomly make crackling noises? 358 views 4 Ans How do we know that donation money end up where they are supposed to? 508 views 6 Ans What do scientists mean when they say “we don’t know why we need to sleep”? 328 views 5 Ans How does recycling deal with food and junk on bottles and cans? 327 views 1 Ans why is it that people with food allergies/sensitivity aren’t affected in utero? 190 views 6 Ans Eli5 why are there different races? 332 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? 304 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? 137 views 1 Ans What is ‘baby brain’? 220 views 3 Ans Eli5; why does saliva taste bad in the morning? 305 views 7 Ans How were film negatives inverted for viewing before the rise of digital scanners? 309 views 2 Ans In a 70F (21C) room, why does poor circulation result in feet that feel much colder (perhaps 45F/7C)? 221 views 9 Ans How does the current/source know that the circuit has been closed? 481 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? 338 views 3 Ans Eli5 What is glucagon and how does it work? 219 views 3 Ans What triggers a cytokine storm in your immune system? 227 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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