Questions tagged [water]

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

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Does drinking alkaline water help you recover from a hangover?

Related to another question of mine on "electrolyzed reduced water". There are a number of companies that sell commercial products claiming to produce such water. I'm guessing it's not by ...
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2 votes
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Does electrolyzed reduced water (ERW) extend the lifespan of animals (compared to regular water)?

Among the research interests of Dr. Pablo Campra (of recent graphite-in-Covid-vaccines claim) is something called electrolyzed reduced water (ERW). One of the (Asian) groups studying this presents is ...
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4 votes
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Nanoscale hydrogen batteries that use water-splitting technology [closed]

It was claimed in this article in 2019 that a nano-battery using water splitting technology is developed. It is described as: The battery gains its charge by interacting with water molecules present ...
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25 votes
3 answers
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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 ...
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7 votes
1 answer
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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 ...
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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 ...
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3 votes
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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: ...
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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 ...
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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 ...
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4 votes
2 answers
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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 ...
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8 votes
2 answers
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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 ...
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11 votes
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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 ...
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7 votes
2 answers
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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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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 ...
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28 votes
1 answer
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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 ...
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2 votes
1 answer
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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% ...
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3 votes
1 answer
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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 ...
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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 ...
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58 votes
1 answer
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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 ...
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5 votes
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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 ...
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8 votes
1 answer
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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 ...
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5 votes
1 answer
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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 ...
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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 ...
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5 votes
3 answers
731 views

Is drinking collected rain water proven to be beneficial for your health?

Rain is liquid water in the form of droplets that have condensed from atmospheric water vapor and then precipitated—that is, become heavy enough to fall under gravity. After reading the article ...
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11 votes
1 answer
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Does cold water boil faster than hot water?

I was having a chat about science with a manager in my office. We were talking about water and he said "you shouldn't boil water from the hot tap because cold water boils faster". I know about the ...
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3 votes
1 answer
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Can current flooding in California end the years-long drought?

California has been stricken by severe drought for years now, to the point that the governor has been required to mandate water rationing. In an Accuweather piece about the storm currently ravaging ...
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1 vote
1 answer
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Can we find water with wood sticks? [duplicate]

Many people and websites claim that one can find water with wood sticks (typically Hazel stick shaped in 'Y'). those who seek for water with wood sticks are called "sourcier" in french. As I fail to ...
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10 votes
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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 ...
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7 votes
2 answers
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Does teaching 6-12-month old infants to back float reduce their risk of drowning?

The American Academy of Pediatrics does not recommend water safety lessons for babies less than one year old: The water-survival skills programs for infants may make compelling videos for the ...
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5 votes
1 answer
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Can Waterseer extract as much as 37 L per day from the air?

Treehugger.com article on Waterseer Wind-powered device can produce 11 gallons per day of clean drinking water from the air [...] The WaterSeer is relatively simple device, designed to be operated ...
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6 votes
1 answer
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Are the birth-control hormones present in the drinking water?

According to this article, the birth-control hormones were found in the rivers and even ended up in the drinking water. Amway dealers claim that only their water purifier can remove these hormones ...
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14 votes
1 answer
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Does soaking in natural hot springs have any health benefits when compared to soaking in heated non-spring water?

There exists a common belief that soaking in natural hot springs has significant health benefits. For example, Hotelexecutive.com claims that: So What Exactly Can Soaking in Natural Hot Springs Do? ...
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17 votes
1 answer
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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 ...
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3 votes
0 answers
143 views

Is soap foam better for cleaning than soapy water? [closed]

Most people who wash something using soap (e.g. the dishes), seem to believe that the bubbles contribute a great deal in the actual cleaning. This is not something I explicitly saw written down ...
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16 votes
1 answer
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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 ...
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1 vote
0 answers
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Thoughts affect water? [duplicate]

I happened to come across the experiment conducted by Masuru Emoto in which he claims that thoughts affect water. He claims to have taken pictures under a microscope before and after applying mental ...
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13 votes
0 answers
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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 ...
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7 votes
1 answer
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Do the plastic shade balls in Los Angeles leach chemicals into water?

An engineer with the Los Angeles Department of Water and Power claims that the plastic balls, which are introduced into the water reservoir in an attempt to combat the severe drought, don't leach any ...
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3 votes
2 answers
230 views

Water exploding upon microwaving [duplicate]

Many people believe that water can explode out of a container after being microwaved. Is this true?
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3 votes
0 answers
123 views

Has 98% of Europe banned water fluoridation? [duplicate]

I came across this gem on facebook today. It contains no sources, makes a bold claim with a numerical statistic to "back it up", and has been "shared" and "liked" thousands of times in the last ~48 ...
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11 votes
1 answer
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Does drinking coffee or tea dehydrate you?

It is widely claimed that despite being made mostly of water, drinking coffee or tea will actually dehydrate you, because the caffeine is a a diuretic. Here is an example from the SFGate news site ...
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5 votes
1 answer
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Is water from a sink different from water from a water fountain?

I have heard (particularly but not exclusively from my friends who grew up in Asia, where the situation may be different) that you should not drink water from a sink in the bathroom. Why? They ...
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37 votes
2 answers
5k views

Has it ever rained fish?

There have been several reports of "raining fish" where fish fall from the sky (usually during a rain storm). An example such as this 2010 video from National Geographic seems unlikely at best. Has ...
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2 votes
0 answers
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Do holes in pot lids make water boil faster? [closed]

The responses to this reddit post make me think that it is a popular belief that holes in pot lids make water boil faster. The claim is that by lowering pressure, the water boils at a lower ...
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2 votes
2 answers
644 views

Water swirl according to hemisphere: video

I'm aware of the previous answer to this question. But my question is concretely about this video. Is it fake? How?
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4 votes
1 answer
687 views

Does drinking hot water have positive health effects?

A related question (Does drinking warm or hot water aid in digestion?) asks about the effects of hot water on digestion. I recently came across an article that claimed a much larger set of benefits. ...
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20 votes
1 answer
8k views

Does one hamburger take more water to produce than 2 months worth of showering?

One hamburger requires 660 gallons of water to produce – the equivalent of 2 months’ worth of showers. Per http://www.cowspiracy.com/facts/ from Catanese, Christina. “Virtual Water, Real Impacts.” ...
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8 votes
1 answer
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Does wetting your toothbrush have health effects?

Today I read a tweet from @Funny_Truth: "Don't wet your toothbrush after you put toothpaste. Water will reduce the healthy benefits of toothpaste." Is it true? If it is what does actually ...
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8 votes
0 answers
314 views

Do covered [drinking water] reservoirs cause health risks compared to open-air reservoirs?

Bull Run Waiver.org is a political group opposed to covering drinking water reservoirs in Portland, Oregon. They making a number of claims that closed reservoirs introduce greater health risks than ...
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3 votes
0 answers
217 views

Is reheated water less effective for skinning goats?

For the Hindu festival of Dashain, we strip the hair from a sacrificed goat with hot water. I was told that the water should be constantly heated. If it is allowed to cool before reheating, it ...
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