117

The answer is that spiders definitely can hurt you. While you may not be likely to be killed, spiders can absolutely hurt you, whether from a large one's bite (whether venomous or not) or from any venomous spider. Australia is probably the best case here, and while they have only had one death from spider bite in 40 years (from a redback bite) this is ...


67

In the absence of any further information, it seems likely that these lambs have recently been given some vaccines or other drugs. As a result, they will not be fit for human consumption until the levels of those drugs have fallen to within acceptable levels. See the section headed "Withdrawal periods for drugs" in Sheep Medicines (UK source) Withdrawal ...


61

No. The amount of formaldehyde in 200 grams of pear is about 7 times the maximum that an infant would receive from a single vaccine, as explained below: According to Determination of formaldehyde in foods, biological media and technological materials by headspace gas chromatography Chromatographia December 1996, Volume 43, pages 625-627: Sample: Pears ...


60

No, this is not true. Not even for just India, as Indian cobra (Naja naja) has round pupils and subcaudal (tail) scales are divided. There is also no pit visible. It is venomous species of snake. This answer assumes, that author means venomous snakes instead of poisonous, as this is common mistake. Also, Wikipedia should have enough credibility for this ...


42

With bitter almonds, 8 - 32 almonds will give you the lethal dosage of cyanide. Bitter almonds yield about 6.2 mg of cyanide per almond and the LD50 for cyanide is 50 mg - 200 mg. This applies only to bitter wild almonds: considering that you're not dead, you most likely ate domesticated sweet almonds, which apparently do not have this problem. The sale of ...


37

No, the maths on these memes don't quite add up, but it is fair to say that a pear does still contain quite a bit more formaldehyde than any vaccine by at least a factor of 10. According to the WHO (World Health Organization), (PDF File) a Pear can contain 6 to 38.7 mg/kg of formaldehyde. That would mean for a 200 gram pear, we have anywhere from 1.2 to 7....


36

In this answer, I do not prove that eating a pack of cigarettes is safe. (Please don't do it!) However, I show that there is a common belief that a pack of cigarettes would contain enough nicotine to kill an adult is based on a urban legend. (That doesn't mean it is wrong, just that it hasn't been proven right.) This is based on this article: Bernd Mayer, ...


30

Are spiders unable to hurt people? There are several species of spiders, some large, others not so large. that are quite capable of harming people. Some can cause severe injury to or kill people. Three requirements: The fangs need to be large enough to puncture the epidermis. The human epidermis is thick enough to render what otherwise would be harmful ...


30

The claim First let's start with noting that the goal of the episode was to get children over their irrational fear of spiders and making those children see the bigger picture. Mummy says cobwebs mean spiders and she hates spiders but Daddy Pig doesn't because spiders eat flies and flies are horrid. Source: Synopsis of episode https://peppapig....


29

Let me start off with my conclusion as a chemist... I absolutely don't believe that heating honey in hot water would make the liquid indigestible or toxic. The claim The webpages cited by the OP, and many others, claim that heating honey in water makes it "unsafe" (I'm lumping indigestible and toxic into one category). Without any reference to some ...


27

As well as personal experience from eating onions that were cut not on the same day. From the National Onion Association: Leftover Onion and Cut Onion Q: Are cut onions or leftover onions poisonous? A: When handled properly, cut onions are not poisonous. After being cut, onions can be stored in the refrigerator in a sealed container for up to 7 ...


26

... maybe a bit more education hurts even less... but the answer is still no. So to me the description with pits and slit pupils (and also the head drawing) looks like indicating pit vipers. I don't knot about their tail scales, though (and it doesn't seem very practial to me to check...). Pit vipers are venomous. But there are lots of venomous snakes ...


23

That is a diagram for identifying pit vipers. There are many, many venomous snakes in the world, including I believe all of the most deadly ones, that are not pit vipers. The advice is particularly unfortunate for Australia, as not a single one of Australia's 10 most dangerous snakes are pit vipers. All 10 are instead elapids. The origin of this graphic is ...


22

The first important point that is completely misrepresented in most articles I've seen about this is that Tifton 85 is not a genetically modified grass, but was created conventionally by crossing Tifton 292 and Tifton 68. See this article about the history and creaton of Tifton 85 bermudagrass for more information. Using this event to highlight the dangers ...


21

No, in general young lamb isn't poisonous. Lambs are sometimes slaughtered very young, earlier than six weeks of age. If young lamb in general was dangerous than that meat wouldn't be fit for consumption. The Official Journal of the International Goat Association published a paper Effects of age and season of slaughter on meat production of light lambs: ...


20

This is an addition to Avi's answer. The varieties are sweet and bitter almond (the latter is the one with amygdalin which is the source of the cyanide as well as the aroma (benzaldehyde)) almonds, see http://en.wikipedia.org/wiki/Almond#Sweet_and_bitter_almonds. Here (Germany) bitter almonds are sold only in small amounts for baking which are labelled ...


19

According to Nicotine Content of Domestic Cigarettes, Imported Cigarettes and Pipe Tobacco in Iran Addiction & Health 2012, volume 4, pages 28–35. The amount of nicotine in each cigarette was from 6.17 to 12.65 mg (1.23 ± 0.15 percent of tobacco weight in each cigarette) in domestic cigarettes. It was between 7.17-28.86 mg (1.80 ± 0.25 percent of ...


18

Yes, a person can die because of poison given them several years earlier. In cases I am aware of, this is due to the poison remaining in, and reacting with, the body. For example, death from ingesting a single dose of a radioactive material can take many years. I am not aware of any evidence that the danger of ingesting a radioactive material, such as ...


14

Hydrogen Cyanide (HCN) has the odor/taste of bitter almonds. Exposure to 10-30 ppm HCN in air can result in a metallic taste being reported. Source: Clinical Environmental Health and Toxic Exposures, by John Burke Sullivan and Gary R. Kreiger, page 711. HCN can be detected at levels from as low as 1ppm and the fatal dose, depending on the time of exposure, ...


14

About Rob Pilley, the "zoologist and producer" who gave the Daily news their original quotes. A google scholar search does not turn up any research from him; none of the 120 papers by a R Pilley are zoological in nature. Most of them are probably by other people. He does have a decent list of credits on IMDB. This suggests that he is an expert on making ...


13

It is a common figure of speech to say [small amount] of toxin could kill [large amount] people. (Examples: 1, 2) It is an emotive demonstration of the toxicity, but it openly ignores the complexity of the delivery mechanism - an assumption Rockwell scoffs at. What is more relevant than the figure of speech used to describe the toxicity, is the underlying ...


13

Summary The question as asked in the title depends on what you consider "strong evidence". I will therefore have a look at which side makes the better-sourced point. (Which is not just about "protecting people with damaged airways", but several other health effects as well.) One side -- the Umweltbundesamt -- gave references to studies the decision was ...


12

Yes: Asbestos Poisoning. A single fibre can get lodged in your lungs, and not cause problems until years later. Asbestos poisoning has a median latency of 44.6 years Source


11

In short, potentially yes, at least in mice: The authors used gas chromatography/mass spectrometry to identify respiratory irritants (e.g., styrene, isopropylbenzene, limonene) in the emissions of one of the polyurethane foam mattresses. Some mattresses emitted mixtures of volatile chemicals that had the potential to cause respiratory-tract irritation and ...


11

Yes, kind of. The researcher quoted in that page is Sandeep Salvi, director of the Chest Research Foundation. He was one of the authors of a paper that was presented at the National Pulmonary Congress, 2004, Ahmedabad. (Note: I assume that means it was not peer-reviewed.) Brashier B, Jantikar A, Sewlikar S, Maganji M, Bal T, Salvi SS, Effects of mosquito ...


11

tl;dr: Yes. This Mister Steve Ludwin is quite public about his snake adventures. The details about his method as reported in the popular press are a bit murky and so imprecise that they increase the danger for fellow travellers down this path beyond the insanely high levels it is on already. All snake venoms are not created equal. Different species possess ...


10

A quick look around seems to show that although uncommon, it is not unique to have range animals poisoned by cyanide. It does not seem to be a "GM" issue(?). Many plants produce cyanide as a defence mechanism against browsers (mainly snail sized). If the plant is under stress (like when a drought occurs) the levels and concentration of this toxin increases ...


10

The World Health Organization report in Concise International Chemical Assessment Document 61: HYDROGEN CYANIDE AND CYANIDES: HUMAN HEALTH ASPECTS Following application of cyanides in aqueous solution to the intact skin of New Zealand rabbits, the dermal LD50s of hydrogen cyanide, sodium cyanide, and potassium cyanide were 0.260, 0.298, and 0.343 mmol/kg ...


9

This Belfast Telegraph article explains it a little bit better. The lambs could have been vaccinated recently. The UFU President is also quoted saying there is little risk to the public. Hope that clears things up. Stringent EU regulations mean that animals which have been vaccinated or treated with antibiotics have to be kept out of the food chain ...


8

I would call this one a falsehood. Starting with something peer reviewed and accountable: Individuals with high intakes of dietary fiber appear to be at significantly lower risk for developing coronary heart disease, stroke, hypertension, diabetes, obesity, and certain gastrointestinal diseases. Increasing fiber intake lowers blood pressure and ...


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