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144
votes
7answers
17k views

Do human activities contribute to climate change?

There is lots of evidence that I have seen showing correlation between human activities and climate change but what evidence is there to support causation?
82
votes
6answers
8k views

Do mobile phones have anything to do with brain cancer?

Is there evidence for a correlation between the use of mobile phones and the occurence of brain cancer? If yes, is there also evidence for causality?
155
votes
4answers
23k views

Does being cold increase your chances of catching the common cold?

"Everyone knows" - a scary statement - that you get "a cold" from being cold. Now it seems to be a fact that you don't, because you get a cold from a (rhino)virus, not from the temperature. But is ...
110
votes
4answers
22k views

Are WiFi waves harmful?

Has it been proven that being exposed to WiFi waves is harmful?
55
votes
4answers
11k views

How bitter is Robert Lustig's “Bitter Truth” about sugar?

A couple of months ago I watched the talk "Sugar: The Bitter Truth" by endocrinologist Dr. Robert Lustig on YouTube. The overall tone of the talk raised a couple of red flags; it sounded a little too ...
109
votes
6answers
14k views

Is alcohol beneficial in small amounts?

It's widely believed that consuming small amounts of alcohol has many health benefits. As a matter of fact, a lot of alcohol might be good for you, as Wired Magazine reports: It’s one of those ...
40
votes
1answer
8k views

Can I get high using binaural beats?

Some sites claim that you can get high using binaural beats: All I-Doser doses are tested by a panel of users who consider themselves experienced in binaural beat modification. A dose is not passed ...
130
votes
1answer
18k views

On 9/11, was Building 7 destroyed in a controlled explosion?

There have been a lot of claims made about the circumstances surrounding the events of 9/11 and Building 7 in particular. The central claim regarding Building 7, that I have heard personally, is that ...
64
votes
3answers
4k views

Is acupuncture an effective treatment?

What evidence is there for or against acupuncture being an effective treatment?
39
votes
7answers
4k views

What is the value of armed bystanders in preventing gun deaths?

On Nov. 5, 2009, 12 soldiers and one civilian were killed, and more than two dozen others were wounded, when a gunman walked into the Soldier Readiness Processing Center at Fort Hood and opened fire. ...
88
votes
3answers
8k views

Does a car with a hybrid engine and Lithium batteries pollute more than a car with conventional technology?

You hear a lot of claims that, once you include manufacturing and battery replacement, hybrids pollute more than an efficient, more conventional engine. Are there any end-to-end studies measuring any ...
28
votes
1answer
5k views

Do ghosts exist?

Ghost themed shows and ghost tours in some cities probably make ghost-related entertainment products a multi-million dollar industry. A ghost is supposedly the spirit of a deceased person who rises ...
22
votes
4answers
4k views

Are there any other studies (besides the discredited Wakefield studies) that have found a link between vaccination and autism?

Wakefield's study from 1998 is now refuted as fraudulent, however there must have been subsequent research by others looking for a link between vaccines and autism. Did any of this research find a ...
15
votes
3answers
2k views

Is routine screening for breast cancer for asymptomatic women worthwhile?

Relatively recently, the United States Preventive Services Task Force made a small change in what its recommendations for routine mammograms, suggesting that they should not be performed on asymptotic ...
220
votes
2answers
32k views

Has man walked on the Moon?

Is there any concrete, solid proof of this space odyssey? Is there a way that I personally have a look a it? Let's say, with a nice telescope ?
134
votes
2answers
16k views

If you shave or wax, will the hair grow back stronger or thicker?

Many people believe that if you shave or - especially - wax your legs, arms, chest, pubic hair or armpits then the hair will grow back stronger, or thicker, or more black, or more rapidly, or any ...
104
votes
5answers
7k views

Are personal electronics a risk to commercial aviation?

Are personal electronics (of present or recent past; e.g. cell phones, mp3 players, iPads) a risk to commercial air travel? Is the typical request to "turn off all personal electronic devices" based ...
46
votes
9answers
8k views

Is race a discredited scientific concept in biology?

I've heard lots of people say things like "race doesn't exist" and "race has no biological meaning." On the other hand, I've heard lots of disagreements too, from scientific popularizers like Steven ...
19
votes
1answer
4k views

Does the presence of a cellphone affect sperm count or heart rate?

A doctor from my girlfriend's family was talking to her over the weekend. She explained to me that he was talking about how there is proof that cellphones decrease sperm count when being stored in a ...
34
votes
2answers
3k views

Is being a vegan more environmentally friendly than otherwise?

On their website, PETA claimed the following: A recent United Nations report concluded that a global shift toward a vegan diet is necessary to combat the worst effects of climate change. And the U....
18
votes
3answers
5k views

Is human evolution slowing down?

It has been said that the human race has basically hit a point where any further evolution is essentially unnecessary: protection from most harmful diseases is provided by medicine, we have very few ...
298
votes
7answers
34k views

Did Jesus live?

Regardless of whether you believe or not... What is the non-Biblical evidence regarding his existence around the time he is commonly thought to have lived? That is, are there other historically ...
67
votes
3answers
7k views

Is the gender pay gap evidence of discrimination?

(I've asked this before but people had troubling separating the question from just the gender pay gap. This is a way I was suggested to ask it, so I am giving it a try) No one can deny the gender pay ...
69
votes
5answers
7k views

Is gun control effective?

I have seen numerous arguments about gun control, in the sense of laws restricting gun ownership or possession, and whether widespread gun possession affects crime rates, and each side is happy to ...
71
votes
1answer
19k views

Is food cooked in a microwave oven harmful for the health?

A colleague of mine just made a comment about cooking food in a microwave oven. According to him it is considered to be harmful to one's health. Is it true?
39
votes
2answers
6k views

Is the Bates Method for improving eyesight efficacious?

The Bates Method is often cited by people looking to avoid wearing glasses, or as an alternative to LAZIK surgery for improving/correcting eyesight. Is the method at all effective? Can eyesight truly ...
73
votes
3answers
14k views

The origin of “99 cents”

I've seen two competing theories on the origin of pricing products at $<desired dollar amount minus 1>.99 (i.e. charging $19.99 instead of $20, of $5.99 instead of $6): Psychological pricing ...
47
votes
5answers
6k views

Does the artificial sweetener aspartame cause cancer?

I've often heard that the artificial sweetener aspartame causes cancer. Is it true?
23
votes
7answers
7k views

Are there technologies that provide unlimited free energy?

Many different sources claim to be able to produce "unlimited free energy". For example: UNLIMITED FREE ENERGY IDENTIFIED Company claims to have developed new technology that provides unlimited free ...
24
votes
2answers
3k views

Have one in ten women suffered rape in the UK?

A recent survey in the UK claims that about 10% of women have been raped but that most do not report the incident even to friends. In the words of one news report: One in 10 women has been raped, ...
20
votes
2answers
2k views

Have global surface temperatures not shown significant warming since the late 1990s?

Those skeptical about the science of global warming have frequently alleged that the surface temperature record has "paused" since about 1998 and showed no significant warming trend (see this recent ...
24
votes
1answer
4k views

Do the mother's genes almost exclusively determine the sons' intelligence?

According to this paper: Intelligence and the X chromosome by Gillian Turner, published by The Lancet (a highly regarded medical journal) in 1996, the X chromosome is dominantly responsible for coding ...
21
votes
2answers
4k views

Are white people more likely to commit mass murder in the United States?

There have been several claims in the media that white men are more likely to commit mass murders. I've seen rather strong evidence that the vast majority of these crimes are committed by men, so I ...
21
votes
1answer
1k views

Does screening for prostate cancer save lives?

The Prostate-Specific Antigen (PSA) Test is used by doctors in many regions of the world to test for prostate cancer and other prostate disorders. Some people recommend its use for screening - i.e. ...
45
votes
1answer
4k views

Are participants in stage hypnosis part of the show?

Are the volunteers actually part of the performance (i.e. paid or in other ways compensated) to perform like chickens etc., or is it actually possible to hypnotize people in the short space of time ...
399
votes
2answers
249k views

Was the experiment with five monkeys, a ladder, a banana and a water spray conducted?

I've found the following picture online. It is about the moral/paradigm behind consistent behavior. Click to enlarge. The image text says A group of scientists placed 5 monkeys in a cage and ...
84
votes
5answers
16k views

How were the pyramids built?

It is claimed in many different pseudoscience publications and sites that it was impossible for the ancient Egyptian civilization to build the pyramids, because: too much labour was needed it was ...
91
votes
5answers
10k views

Are women underpaid relative to men?

Many articles, such as this one, report a significant wage gap between men and women of 15% or more as evidence of discrimination. On the other hand, some sources, such as this one, claim that the gap ...
87
votes
2answers
20k views

Does polyphasic sleep work? Does it have long-term or short-term side effects?

Cutting sleep down to 6, or 4, or 2 hours per day sounds fantastic. It also sounds like something that should have evolved naturally if it were possible. From the Polyphasic Society: Humans are ...
67
votes
5answers
5k views

Is the placebo effect a purely psychological effect?

The placebo effect plays a crucial role in clinical trials and in our understanding of medicine, but I have always had some difficulty in understanding how exactly it works. Is it a purely ...
47
votes
3answers
36k views

Does regularly drinking from a plastic container cause cancer?

I drink water from my plastic cup regularly and a friend commented that it could cause cancer. He also added that I should not heat food in plastic containers or wrappings in the microwave as that ...
73
votes
6answers
6k views

Do violent video games cause violent behavior?

I have been following this question casually over the past couple of years, and it seemed to me that there was no strong consensus either way on the subject. However, I recently read an editorial from ...
83
votes
6answers
10k views

Is homosexuality innate?

There is a widespread belief that one chooses to be a homosexual, and that people can successfully overcome such feelings. On the other hand, some scientific studies have shown that finger length may ...
35
votes
4answers
6k views

Can we grow enough crops to feed all people on Earth?

Vegetarianism is heavily promoted. But let's say all people on Earth stop eating animal products. Can we grow enough crops so all people on the Earth are provided with enough healthy, nutritious food? ...
51
votes
2answers
3k views

Is it harmful to your eyes to read in dim light?

Is there any scientific backing to the claim that reading in dim light damages your eyes? Related to: Does watching television damage the eyes?
46
votes
2answers
4k views

Has most peer-reviewed research on homeopathy given positive results?

I was surprised by the following claim from NaturalNews: Most clinical research conducted on homeopathic medicines that has been published in peer-review journals have shown positive clinical ...
59
votes
4answers
10k views

Does watching television damage the eyes?

Is there any evidence that watching television for too long or while sitting too close weakens the eyes (leading to myopia, for example) ?
55
votes
3answers
7k views

Does burning your food increase your risk of getting cancer?

About a year ago I heard that burning your food can lead to an increased risk of getting cancer. The explanation was that the burned portion of the food was carcinogenic. The Carbon that would be ...
41
votes
1answer
4k views

Is refilling water bottles bad for you?

On a lot of bottles of so called mineral water, it is advised not to refill the bottle (with ordinary tap water, or any other drink e.g. cola) as doing so may present a health hazard. Is there any ...
28
votes
1answer
5k views

Does drinking milk lead to osteoporosis?

The China Study authors state that: osteoporosis is linked to the consumption of animal protein because animal protein, unlike plant protein, increases the acidity of blood and tissues. They add ...

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