Ionizing electromagnetic waves, usually harmful to most biological beings.

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Are low-intensity radio-waves carcinogenic?

A recent review article, Oxidative mechanisms of biological activity of low-intensity radiofrequency radiation reached a surprising conclusion our analysis demonstrates that low-intensity RFR ...
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139 views

What is the relationship between radiation and evolution?

There is always a certain amount of background radiation present, for example due to ionizing radiation from the sun and other stars. Also certain materials like granite may emit relatively large ...
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What level of cellular radiation is harmful for humans?

What level of radiation at the frequencies used by the cellular network(1-2 Ghz) is harmful for human health?
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87 views

How far can we go in engineering our own evolution? [closed]

After recently seeing Christopher Nolan's Interstellar and reading Kip Thorne's The Science of Interstellar, I've seriously been reflecting on the challenges mankind faces in becoming space pioneers, ...
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37 views

About modern dating techniques

In a comment to this question, it was said that Radiocarbon dating won't work. For a start the tree needs to be dead, which since you're not using the rings I'm assuming it isn't. Also the atomic ...
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49 views

About radiation therapy

With radiation therapy, could some of the radiation used cause new mutations in non-cancerous cells that are near the tumour that is being irradiated? If so could these new mutations lead to new ...
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55 views

Any benefit to low dose radiation?

Is there any survival benefit in humans that can be obtained from chronic exposure to low dose radiation, or is any dose of radiation a potential harm? Has any research been done into this?
2
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1answer
130 views

Is excessive hydration a risk factor for cancer in humans?

I was reading a book on radiation biology, and the book describes the process of "indirect action", where radiation can first ionize a water molecule forming a free radical, which then may interact ...
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427 views

Can we determine a person's age by dating methods or other means?

There are many sports restricted to players of a certain age (e.g. 16 and under, 18 and under, etc.) What if a person is older and fakes his birth certificate to say that he is younger? Is there any ...
3
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151 views

Can radiation equilevant to 1 CT (computer tomography) scan causes significant changes in human body?

I've read that CT scan causes radiation equivalent to few hundreds of ordinary X ray scan. It sound scary at the first look of it but I wonder is it the amount considered significant? Can dosage equal ...
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50 views

How well understood are the long-term effects of nuclear radiation?

Sometimes, when people are concerned about radiation, it is not because it is precisely quantified how dangerous it is, but because we don't know how dangerous it is. How well understood are the ...
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103 views

Hair loss in a nuclear submarine? [closed]

Biologically, how prevalent is hair loss on a nuclear submarine? How can prolonged exposure to radiation levels typically present on a nuclear sub affect a person, say over a year or even more?
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34 views

DNA Fingerprint

I recently came across an article indicating that the half life of DNA in the most ideal situations is 521 years (http://www.nature.com/news/dna-has-a-521-year-half-life-1.11555). However, since ...
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Is WIFI safe for humans? [closed]

I have wifi on at my home almost all the time. I learned that the frequency of visible light is around several hundreds of THz, while the frequency of wifi is only several GHz, which is only ...
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1answer
40 views

Reverse tomography to create 3D scalpel

Isn't it possible to reverse tomography methods to create means to deliver heat or radiation precisely in 3D? This would be "3D scalpel" i.e. device which would be able to eradicate tumor cells ...
3
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1answer
89 views

Is a single x-ray photon capable of doing enough damage to the DNA of a cell to kill that cell? [closed]

Ionizing radiation is damaging to DNA, but is there such a thing as a safe dose below which no DNA damage could occur? I'm not asking about a minimum safe dose overall, just whether or not there's an ...
2
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2answers
176 views

Radiation and “Safe Dose”

I've read about safe doses of radiation, briefly. Why is there such a thing a safe dose? Can't any radiation give you cancer? Why is it more and more dangerous to take in larger and larger doses? Just ...
2
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2answers
163 views

Difference between Medical and Airport scanner radiation

What is the difference between radiation doses of a medical scanner and airport security scanner (X-Ray full body scan)? Is it the same kind of radiation? Does it pose any danger for people who fly ...
6
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1answer
188 views

Why does radiation sickness cause hair to fall out?

As I understand it, radiation poisoning (acute radiation syndrome) is fatal because the radiation kills cells. However, why do victims experience hair loss at such an early stage in the process?
6
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216 views

Why are women more susceptible to radiation?

The answer to this question on the Space.SE indicates women are more susceptible to radiation in space than men. Why is this the case? Is it merely that women have less muscle mass (which being ...
4
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1answer
46 views

Are there any studies on the fertility levels of humans/mammals as a function of their stay at Antarctica?

Wikipedia, and Space.SE seem to indicate humans become infertile in space due to the increased exposure to cosmic rays. Knowing as we do that Antarctica is holey, and subject to increased radiation ...
2
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1answer
73 views

Aside from cockroaches and other insects, which species (of all kinds) are 'immune' to ionizing radiation?

I have just been reading this excellent question and answer about cockroaches ability to withstand ionizing radiation. My question is an extension of that question: aside from insects, which other ...
8
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1answer
451 views

How is the effective dose calculated when only part of the body is irradiated?

For calculating the effective radiation dose in Sv, the equivalent dose absorbed by each body part is averaged according to tissue-specific weighting factors, which sum up to 1. If not the whole body ...
10
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461 views

What is the modern state of the theory of evolution?

When I studied biology at my medical school we used to learn things about a century old: the famous Darwin's voyage on "Beagle" to the Galapagos Islands, the classical triad of his Theory of ...
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How do cockroaches resist the effects of ionizing radiation?

Cockroaches are very hardy insects. It is known that, among other things, they are able to withstand bursts of ionizing radiation that would kill a human being. The explanations of this observed ...