Which body part catches fire the easiest?

your hair.Hair is keratin which is composed of approximately 51% carbon, 21% oxygen, 17% nitrogen, 6% hydrogen, and 5% sulfur.When some heat is applied then the chemical bonds which hold those elements in their place in complex molecules, start to break down,

What is the ideal biological age for a woman to have children?

The ideal biological age doesn't give you the ideal age for parenthood.  Very young women tend to have much easier deliveries.  Older women have greater risk of  unwanted complications.  Children born to either end of the spectrum can be incredibly intelligent.  

Are we likely to see life extension/longevity enhancing technology put to use in our lifetime?

As it is now, death is a certainty for all. Can this certainty be ever altered? Of course, yes if we make tremendous progress in the field of Life extension. Life extension is possible. Life extension is not a hoax. Zovon have comprehensive information about 'Life Extension – Scientific Search for Immortality!'The science of life

Why do our bodies need less non-R.E.M. sleep as we get older?

Although it is a fact that older people have less REM sleep, it does not mean that this is normal. NIHSeniorHealth: Sleep and Aging - About Sleep Older people often take more medications with side effects that interfere with a normal sleeping pattern.

Can someone hack into a human body?

Nope. Computers and Brains work so vastly different it would be pretty darn impossible to hack into a Brain (Not to mention the Brain is only Hardware, so to hack into one requires Physical hacking, you cant just put code into it and expect the person to be loyal to

What are your comments on the claims by Dr. Ellis Silver that humans were put on earth by aliens?

I honestly think this book is a decoy, a probe of sorts.. An experiment to see whether the idea is accepted and how far do people take it.What mystifies me is that there are some truths in it that are not common knowledge and I can't

How long can we live without a shower?

Pretty much infinity. This chemist hasn't showered in 12 years: http://motherboard.vice.com/read...All you've really got to do is wash your pits and crack with a rag, and everything else stays pretty clean. Maybe wash your face. Natural oil is actually very healthy for your hair.

How long can an average person live without oxygen?

Approximately three minutes before irreversible brain damage... if you can prepare first. However, most people aren't keeping their blood highly oxygenated - usually only as much as your subconscious mind demands.So expect a minute at most before permanent brain damage, and maybe 3 minutes at max before total

What are your own best ideas?

Hiring Vladimir Putin as Defense Minister of India for 6 months, take back Pakistan , send back Putin, make Narendra Modi as PM for Akhand Bharat .(India+Pakistan-Terrorists).Distributing a vaccine(imaginary) compulsory for every male, which leaves traces of proof if he really raped a girl. If convicted ,death penalty(Nothing

Can humans survive without trees?

At this point in human history with the level of technology and resources we currently have, we absolutely could NOT live without trees.As this article points it out-

How did the human race manage to survive the past without vaccinations?

People would die from different diseases than we do nowadays. Smallpox, the plague, cholera, typhus, dysentery to name just a few. Tetanus, too, although not that often. You knew from experience that not all of your kids would make it into adulthood. It was fairly common to have a celebration for 3 rd birthday, for if your kid had

Can humans really survive 3 weeks without eating? What would not eating for 2 or 3 weeks feel like? How long has a human actually survived without eating?

Yes. A human can live for more than three weeks without food but water is a different story. At least 60% of the adult body is made of it and every living cell in that body needs it to keep functioning.Mahatma Gandhi survived 21 days of complete starvation.But for curiosities sake I did

Can humans breathe 100% oxygen (pure oxygen) and live?

It is not just the percentage of oxygen but the atmospheric pressure also determine oxygen toxicity.The body is affected in various ways by high oxygen level-Short term exposure to high concentration of oxygen under higher atmospheric pressure can cause convulsions ,unconsciousness & seizures.Longer exposure to increased oxygen levels al normal

Can humans really survive without eating?

the body can handle water fasts (when you drink only water quite well). i have done plenty of these, every few months apart or so, and they are in fact very good health benefits to them. i have done about 3 that have been 20 days long. you have to

How long can a human sleep?

In one go? And with no sleep illness? After staying awake for two nights I slept for 22 hours only getting up for a pee visit. I was so confused when I woke I had to check teletext to know if it was morning or night. (Being winter it was could have

Have scientists discover everything about the human body?

Scientists do not seem to know how to correlate the brain with any type of magical activity in the body. This may be because magic is rare, because most bodies are very basic, or because the degree of correlation for magic is pretty demanding.However, scientists do

How long can you survive without salt?

Salt(NaCl)Salt is a very common and important part of our diet. Food tastes bland without it. Not only for taste but it's important for having a healthy body also. Salt contains iodine whose defficency leads to the malfunctioning of the thyroid gland which causes diseases like simple goitre (enlargement of thyroid and visible swelling of neck) cretinism (dwarfism

How long can we live without action?

We can live quite a long time without action. But it depends what you mean by action. If you mean no movement at all, then life would be short due to no intake of water or food. You'd be vegetable on life support. You

Can humans really survive 3 weeks without eating? What would not eating for 2 or 3 weeks feel like? How long has a human actually survived without eating?

Yes. A human can live for more than three weeks without food but water is a different story. At least 60% of the adult body is made of it and every living cell in that body needs it to keep functioning.Mahatma Gandhi survived 21 days of complete starvation.But for curiosities sake I did

What's the care guide for a pet human?

If we assume the alien creatures to be like us, wanting to observe their charges, our captivity would likely be similar to what we have done with our fellow primates. In the early years, many of the cages were simple square confines that prevented escape. Perhaps we would be kept in by sonic bands or glass-like

How long can we live without appreciation?

It's depend on person to person thinking....So let's explore my thinking first than you (if anyone is here to read my answer) are free to explore your one's...What is appreciation : Appreciation is a kind of respect or love in the heart of other for our actions or good deed .Appreciation effect on other:

How can one live without a kidney?

The human body is a magnificent machine that knows how to compensate and reallocate resources.

What is the average time a human survives without water?

The number of 3 applies in general with average humans. 3 minutes without air, 3 days without water, and 3 weeks without food. Naturally this ratio changes when a person is doing very strenuous activity, or is larger, smaller, or more/less in shape.

How long SHOULD a person live?

Hard to answer because it depends on what you value.  The general idea of four score and ten works for me but I don't have any rationale for it. I don't think there is a set time period. People generally don't think people who are trying to kill  them or people experiencing severe suffering for which

What do human nasal passages look like, anyways?

Borrowing from my old post from Physics Forums (http://physicsforums.com/showthr... ):At first glance, the interior structure of the nose looks extremely confusing ( a source of great frustration when you get nasal congestion), even from the viewpoint of most anatomy textbooks. You can see the concha

What would happen to the human species if our hunger instinct suddenly disappeared?

Losing the instict to eat doesn't mean that we would stop eating it. It's like losing your sense of hunger. You don't feel hungry but eventually you will die if you don't eat anything.But if you mean we wouldn't need to consume

How did the human race manage to survive the past without vaccinations?

People would die from different diseases than we do nowadays. Smallpox, the plague, cholera, typhus, dysentery to name just a few. Tetanus, too, although not that often. You knew from experience that not all of your kids would make it into adulthood. It was fairly common to have a celebration for 3 rd birthday, for if your kid had

How fast does blood travel through our arteries and veins?

Let's do the math.The human body has 5.6 litres (6 quarts) of blood. According to an article on howstuffworks, the heart pumps about 2000 gallons (7500 litres) of blood each day. This equates to 7500/24=312 litres/hour= 5.2 litres/ minute.Thus, every unit of blood flowing out of the heart will

Is it scientifically possible to live without food and water for ten months?

Its partially proven, as per modern science terms after 3-4 days with out eating they will try to take nutrients stored in the body ,its like self cannibalizing. The visual markings will appear on the body especially in soft tissue  portions like lips that will have small cuts , dry and

How long can a human run at maximum speed?

It depends on the person, If a wild animal is running behind me at the same speed (my top speed) I won't stop becauce of

How long does it take for someone to eat another human?

That would depend. If you were in a group, you could finish him in a day or two. If you are eating him alone it would take you a month. You will have to cut up the body into parts and freeze it. Use sufficient ground ginger and garlic on the meat. Tastes better curried with hot

Can humans really survive 3 weeks without eating? What would not eating for 2 or 3 weeks feel like? How long has a human actually survived without eating?

Yes. A human can live for more than three weeks without food but water is a different story. At least 60% of the adult body is made of it and every living cell in that body needs it to keep functioning.Mahatma Gandhi survived 21 days of complete starvation.But for curiosities sake I did

Can the human stomach digest a hamster?

It can but why would you want to eat one? In western civilization we do not eat these small animals, they are too small and have no extra meat on them and stand to no nutritional values for humans. In fact you would have to be pretty desperate for food if you attempted

Are humans biologically capable of cross-breeding? Why?

(1) Cross-species hybridization is very common. The concept that different species are reproductively isolated is mainly a human definition (and is only one of the many different perfectly valid definitions of "species"), not a description of absolute truth.  (2) That said, a high degree of reproductive isolation

Why are we born to die?

Are people born to die ?This question should be edited from my point of view -

What does the average human look like?

QUESTION: What does the average human look like?Not only in terms of appearance. How is the average/most common human in terms of salary, religion, skin color, sexual orientation, job, political opinion, interests, etc?ANSWER: Chuck Cooper's answer is a good start, but those faces are

How long can one survive without any proteins?

You would die very, very quickly, if not instantly. Without proteins, these would be some of the immediate effects:Proteins make up ~50% of the dry mass of a cell, so you'd lose a great deal of your body mass in an instant.Without actin, myosin and tubulin, each of your cells would

How durable are human spines? Does it take a lot to become paralyzed? Should i worry about it? Are the chances very low of becoming paralyzed? Will there ever be a fix for paralysis?

Firstly, the spine does not actually have to be severed to cause paralysis and loss of movement, this can be cause by any spinal chord injury (but doesn't always happen, and may not always result in full paralysis.)  Also, paralysis can be either complete

Could the world survive without men?

It did, for a very long time. Even longer with no life at all. Two sexes evolved to hasten an organisms adaptability. The differences between men and women were carved out of necessity, culture, and tradition. All served their purpose at one time or another, usually more. Women were by no means passive in this development.

How long can we live without a reputation?

We live our normal life like that in billions. There are so many people who can be dubbed as unsung heroes who never taste the fruit of reputation. There are only a few people who yearn for making waves and be noted.They may perhaps shorten their lives if their yearnings are not fulfilled, but from religious point of

How long can we live without time?

You're going to try the world of IMAGINATION. TIME & GRAVITY both are a very complex phenomenon happening every moment we pass to our death.I've always been interested in understanding reality on based of time,My favorite movie is INTERSTELLAR that's based on time & gravity. People here think it's a mind twisting bullshit because they're afraid to understand

With modern medical technology, how long can a healthy human survive without food and water?

Movies are in the business of taking you somewhere where reality escapes you. They are dead wrong about living for 20 years without food and water. I often detect weaknesses in movies when it becomes medical, because I know how real medicine goes. So, sorry you became the victim of a movie film director or scriptwriter.Back to medicine:

How long can a human survive without calories?

There are so many variables to this question that it cannot be answered with a definitive value. The starting weight of the person. If the person has excess weight or not. Any health issues they may have. The environment the person is in. The physical condition they are in. There are just