Questions tagged [water]

A chemical substance with the chemical formula H₂O, and an important biological solvent.

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17
votes
2answers
11k views

Can you breathe underwater using bubbles of air?

A very popular videogame character, which is famous for his sonic speed, is depicted breathing underwater by using air bubbles. Now since I've never heard anyone complaining about this, despite the ...
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0answers
3k views

Will storing plastic water containers on concrete cause contamination?

Several preppers make the claim that storing plastic containers with water on concrete floors is bad because chemicals from the floor can leak into the plastic and then end up in the water. Here are ...
47
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3answers
28k views

Is watering plants under a hot sun bad?

A couple of people have told me that it's a bad for plants to be watered in the middle of a sunny day, i.e. it's not just that you waste more water due to evaporation, but that there are actually bad ...
8
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1answer
1k views

Does hydrogen-infused water have these health benefits?

I recently saw a local shop selling packages of water infused with hydrogen gas. It was alleged that hydrogen is an antioxidant and therefore drinking hydrogen-infused water would have various health ...
57
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1answer
54k views

Do laws exist that say restaurants must serve customers who request tap water?

My mother claimed the other day that it is a "state law" that any restaurant must serve customers tap water upon request, therefore not requiring customers to buy a (flavored) drink or (overpriced) ...
4
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1answer
392 views

Do lakes and seaside areas have less snow? Why?

A friend claimed that areas near lakes or the sea have less snow, a theory she heard on a visit to Lancaster, England, which is near the Lake District as well as the Irish Sea and so would feel the ...
25
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3answers
7k views

Can the molecular bond angle of water be changed via distillation?

John Ellis claims that water has a "hydrogen bond angle" ranging from 104° to 114°, and that his patented distillation machines can produce water with a permanent hydrogen bond angle above ...
18
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1answer
5k views

Does drinking while eating impair digestion?

I have read many blogs and forums that either say eating and drinking at the same time is safe, good for you or bad for you. No sources are ever cited on any of the sites. Does research exist to ...
7
votes
1answer
510 views

Do heavier people need to drink more water?

A 2013 article by Yuri Elkaim, a holistic nutritionist, in the health section of U.S. News & World Report says: if you weigh 200 pounds [90 kg], you would need 100 ounces [3 l] of water per day ...
16
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2answers
765 views

Does water therapy provide measurable benefits to childbirth?

I recently watched the trailer for The Business of Being Born, which included the following quote: "The presence of Doulas; using water during labor; these things have been scientifically shown to ...
4
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0answers
558 views

Will bacteria grow in filtered water?

Zero Water makes water filtration systems that they claim remove 99% of total dissolved solids from water. On the Water is the New Gold blog, a water-filter scientist warns against its use: More ...
3
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0answers
130 views

Are all snowflakes unique? [duplicate]

It's often been told to me that all snowflakes are unique. It's led to the phrase "special snowflake" to describe something or someone who is unique/distinct from all others. Even Wikipedia states: ...
20
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1answer
18k views

Did an elite Kenyan athlete help an armless runner drink, losing $10,000 prizemoney as a result?

From WTF Facts A Kenyan elite runner passes water to a dehydrated disabled Chinese runner who was suffering. This slowed her time. She came in 2nd in the race not only costing her the win but ...
16
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0answers
17k views

Is rice water a good fertilizer?

When rice is washed, the wash water becomes whitish due to the starchy powder in the skin of unwashed rice. I've often heard or read, usually in water-saving, money-saving, or gardening tips, that the ...
17
votes
1answer
26k views

Are there any benefits to drinking 1.5 liters of water first thing in the morning (water therapy)?

I'm not sure the origin of this "water therapy", but I've seen various websites that claim that drinking 1.5 liters of water right when you wake up is great for your body/mind, heals all diseases, etc....
41
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3answers
10k views

Does drinking distilled water remove needed minerals from your body?

Claim: Drinking distilled water can actually remove needed minerals from the body, due the lack of minerals in the water, and therefore do damage to the body. I have a hard time accepting this due ...
33
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2answers
3k views

Can anything be 'more hydrating than water'?

Some sports drinks, and even vegetables claim to be 'more hydrating than water'. What does this even mean? How is 'hydration' even measured? If I ate enough cucumbers could I survive without ever ...
3
votes
1answer
560 views

Is the water used in coal burning power plants "never returned to the environment"?

According to a Duke University press release titled Replacing Coal with Gas or Renewables Saves Billions of Gallons of Water: Water consumption – the amount of water used by a power plant and ...
4
votes
2answers
553 views

Does eating nonsalty food with MSG make you thirsty?

Assume that you're thirsty after eating food that didn't taste salty while you were eating it. I know that MSG contains sodium. Quora posts and https://msgdish.com/msg-problems-and-answers/ still ...
17
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1answer
3k views

Can magnets be used to clean laundry?

According to the Magnetic Laundry site, magnets can be used instead of detergent to clean laundry! For a "scientific" explanation, their video states: These magnets work at an atomic level to ...
8
votes
1answer
21k views

Do water molecules change when you talk to them?

I've heard that saying something nice in front of water changes the water molecules shape into a nice shape and saying something bad in front of it makes the molecules align in a bad order (ugly one). ...
3
votes
1answer
548 views

Does salt (or sodium) not make you thirsty?

This is from a Toronto MS thesis: High dietary sodium intake is hypothesized to increase food intake (FI), fluid intake and glycemic response. Two short-term randomized repeated-measures studies ...
23
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2answers
3k views

Do fruit/vegetable washes effectively remove pesticides?

Is there any evidence to suggest that commercially available fruit/vegetable washes can effectively remove pesticides from produce? Here are some example claims: Veggie Wash uses natural cleaners ...
8
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2answers
899 views

In the U.S., is more water used for electric generation, and more electricity used for water infrastucture, than anything else?

Today I received an e-mail message regarding an upcoming Energy Water Nexus Technical Conference that made this unsupported claim: Nationally, the largest category for water consumption is electric ...
11
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2answers
3k views

Does a vortex vessel affect water in these specific ways?

I just saw a Kickstarter campaign for a "vortex vessel" that supposedly improves tap water for drinking. Some of the claims: "[Tap water is] stuck in closed pipes where no beneficiary chemical ...
7
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2answers
1k views

Can you extract over 500 gallons of water from the air a day for a few cents per bottle?

According to the Daily Mail article LA couple win $1.5 million XPrize for radical system that can make clean water from AIR for less than 2 cents a quart, David Hertz and Laura Doss-Hertz have ...
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1answer
562 views

Does boiling water with solid silver kill germs?

I was in China recently, and the tour guide mentioned that in some parts of China, the water quality is not good (due to pollution). To get around this problem, some locals used solid silver and ...
24
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2answers
14k views

Can boiling water break car windows?

A friend of mine in Australia has heard from several of her friends that it's unsafe to pour boiling water on car windows in order to defrost them. Online examples of people claiming it's unsafe ...
28
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1answer
5k views

In California, is water from the north diverted into the Pacific Ocean?

Possibly addressing the Californian wildfires, president Donald Trump claims that in California "water coming from the north" is "being diverted into the Pacific Ocean". Governor Jerry Brown must ...
10
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0answers
558 views

Do cats avoid water when it is placed near food?

This tumblr post makes the interesting claim that if a cat's water is placed near its food, the cat will consider the water to be unsafe to drink, and that cats will be more inclined to drink it if it ...
23
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2answers
2k views

Is bottled water more contaminated than tap water?

According to some NPO's such as the Australian Centre for Independent Journalism and the Environmental Working Group: Bottled water is constantly promoted as pure and natural, but research by the ...
16
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1answer
915 views

Is urine the cause of redness of eyes (in swimming pools)?

According to abc13.com, Chlorine in swimming pools don't make your eyes red, it's the urine. Quoting from the article: One of the most shocking revelations the CDC shared was the truth behind what ...
19
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1answer
38k views

Will fluoride and chlorine dissipate from tap water left to sit overnight?

One common recommendation for watering house plants with tap water is to allow the water to sit overnight before watering, so that the fluorine and chlorine that are commonly added to tap water (which ...
16
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1answer
11k views

Is chlorine in water absorbed quickly through the skin?

I recently saw a demonstration of a water filtration and purification system. In one of the demos two glasses were filled with tap water and then someone put three fingers into one of the glasses and ...
8
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2answers
18k views

Does Pureit Polisher remove the chlorine from chlorinated water?

This purifier claims to produce 100% pure water. They use chlorine. Chlorine, when taken in for a long period, is bad for health. The 4 stage purification process. Polisher Removes chlorine and ...
2
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1answer
405 views

Does chlorine in water harm humans? [closed]

Some sources claim chlorinated tap water is harmful. Global Healing Center, for example, claims links to cancer, heart disease, asthma and atherosclerosis. The risk of developing cancer is 93% ...
2
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0answers
1k views

Does chlorine in water harm soil bacteria?

This article claims that both chlorine, and chloramine, which are added to many municipal water supplies to kill harmful bacteria, can also harm the good bacteria in soil, necessary for a healthy ...
3
votes
1answer
714 views

Does atmospheric water contain minerals?

Scalene Aquaria sell a machine that collects from moisture from the air. They describe a nine-stage process - most of it looks like hogwash, but this one made me more curious: The Eighth stage ...
232
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4answers
30k views

Does hot water freeze faster than cold water?

Is it true that hot water freezes faster than cold water and if so, what practical applications have there been found for this phenomenon?
4
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0answers
355 views

Did the Vanderbilts from the Gilded Age bathe in saltwater?

Recently, I visited the mansion that the Vanderbilt family (from the Gilded Age, late 1800s) used to live in -- it's commonly referred to as "The Breakers", located in Newport, Rhode Island. Many of ...
58
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1answer
13k views

Does anybody spend 6 hours each day just to get water?

During the 2018 Super Bowl there was a commercial advertising a campaign to help bring fresh water to people in developing countries. It argued that fresh water is grossly easy to attain in developed ...
16
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1answer
2k views

Does it take 200L of water to make a latte?

I just saw this Youtube clip that claims it takes 200L of water to make a latte. Is that true?
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3answers
4k views

Is water fluoridation harmful?

There’s a controversy going around whether the benefits of water fluoridation outweigh the potential harms. What is the evidence for the harm this may cause and what evidence supports the health ...
5
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0answers
545 views

Does watering plants with purified water yield better results?

I watched a commercial for the Aquaguard Enhance RO+UV water purifier recently. In that commercial, a science teacher assigns an experiment to students. The students bringing a plant to school, and ...
81
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2answers
12k views

Is drinking water during a meal bad for you?

I have heard that it will "wash away the nutrients", that it dilutes stomach acid and all kinds of things. Is this just an old-wives tale?
21
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2answers
12k views

Is water calcification bad for your health?

I have a friend, who adamantly believes that water calcification causes a number of problems, including poor health. He also said it made the water taste disgusting. He had recently installed a ...
5
votes
1answer
976 views

Can someone survive being swallowed by a whale?

This site claims that a man was swallowed by a whale for three days and survived. His name is Luihi Marquez and is Spanish. Upon searching, it seems that multiple news sites have covered this ...
3
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0answers
278 views

Is there any scientific basis to this "catalytic converter" to treat hard water?

I came across this product called Softer Water Conditioners. It includes a lot of scientific sounding mumbo-jumbo to explain how it works, which raises my skepticism. Is there any scientific basis to ...
41
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2answers
62k views

Is there a place in the world where two oceans meet and they don't mix?

This picture is currently being spread virally: Some Muslims were saying that this is mentioned in the Quran where it is said: He has set free the two seas meeting together. There is a barrier ...
24
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2answers
13k views

Has 99% of the western continental Europe banned water fluoridation?

I keep seeing this claim about the unpopularity of water fluoridation parroted. Despite dental pressure, 99% of western continental Europe has rejected, banned, or stopped fluoridation due to ...