AskScience AMA Series: We're professional fact-checkers and science editors at Undark magazine, here to answer questions about truth-telling in science journalism. AUA. |
- AskScience AMA Series: We're professional fact-checkers and science editors at Undark magazine, here to answer questions about truth-telling in science journalism. AUA.
- What does a whitening toothpaste contain that is responsible for whitening teeth?
- What happens after a needle is disposed of by a medical specialist?
- Would a astronaut in orbit around betelgeuse experience the same time dilation as he would with a blackhole the same mass of betelgeuse?
- Do antidepressants cause any permanent changes in the brain that persist even after stopping them?
- Why are Neanderthals a Different Species?
- If the universe favors entropy and chaos, why does gravity exist?
- Why is Earth the most dense planet and Saturn the least dense?
- Is it possible to medically determine a person's age? and by what degree of accuracy?
- Does the amount of gas you burn change depending on your elevation?
- Why is Oil used as coolant and heater despite having poor thermal conductivity?
- Suppose we experienced a supernova from our sky brighter than the moon. Considering the time light takes to reach us, does it mean the event actually happened millions of years ago? If so, does it also mean, right now at this exact moment a star we usually see in the sky has already exploded?
- Why are many instruments made of brass? What about the material makes it suitable for music?
- How much adrenaline is released during an adrenaline rush?
- Why aren’t solar powered phones a thing yet? Will it happen in the future?
- When TIR occurs how does a transparent medium gain the property to reflect light on some internal sides when it normally doesn't?
- How do polymer scientists know what new polymers to create and test?
- What makes people stick out their tongues when they are concentrating on something intricate with their hands?
- Oumuamua was spinning end on end. It is possible the acceleration observed as it rounded the sun was due to some form of boomerang effect?
- How do we know determine the half-life of an isotope?
- Do DNA base pair lengths differ?
- How does hail get so big?
- How do sea slugs and sea snails not perish from ocean salt?
- can a wave be longitudinal and transverse at the same time?
| Posted: 05 Nov 2018 04:00 AM PST Hello! Do you like your science journalism factually correct? So do we. I'm Jane Roberts, deputy editor and resident fact-checker at Undark, a non-profit digital science magazine published under the auspices of the Knight Science Journalism program at MIT. The thought of issuing corrections keeps me up at night. And I'm Brooke Borel, a science journalist, a senior editor at Undark, and author of the Chicago Guide to Fact-Checking. Together with a small team of researchers, I recently spearheaded one of the first industry-wide reports on how science news publications go about ensuring the trustworthiness of their reporting. What we found might surprise you: Only about a third of the publications in the study employ independent fact checkers. Another third have no formal fact-checking procedures in place at all. This doesn't mean that a third of your science news is bunk - journalists can still get a story right even if they don't work with an independent fact-checker. But formal procedures can help stop mistakes from slipping through. We're here from noon (17 UT) until 1:30 pm EST to take questions. AUA! [link] [comments]  |
| What does a whitening toothpaste contain that is responsible for whitening teeth? Posted: 04 Nov 2018 04:47 AM PST |
| What happens after a needle is disposed of by a medical specialist? Posted: 04 Nov 2018 06:13 PM PST What happens once a needle, for instance, has been used and disposed of by a nurse/doctor in those yellow containers? Do they get recycled or do they get destroyed? [link] [comments]  |
| Posted: 04 Nov 2018 10:41 PM PST |
| Do antidepressants cause any permanent changes in the brain that persist even after stopping them? Posted: 04 Nov 2018 09:38 AM PST Just curious if we know if/what changes may be permanent. Obviously there are short term changes, or changes that take place while a person is actively taking antidepressants, but is there any evidence of changes beneficial, toxic, or otherwise from long term use that persist even after you stop? Examples could be personality changes, enlargement or shrinking of brain structures, neurogenesis or neurotoxicity, whatever. My understanding is that there are probably beneficial changes that come from relieving the physical stress on the brain caused by depression - anything else? [link] [comments]  |
| Why are Neanderthals a Different Species? Posted: 04 Nov 2018 05:19 PM PST I was just watching a youtube video that talked about how neanderthals and humans have mated on many occasions. As I understand it, the definition of what defines different species is if two individuals can mate and produce a fertile offspring they are the same species, whereas if they can't they are a different species. Given this, why are neanderthals a different species if they were able to mate with humans to produce fertile offspring? [link] [comments]  |
| If the universe favors entropy and chaos, why does gravity exist? Posted: 04 Nov 2018 06:03 PM PST I only have education up to 2 semesters of inorganic chemistry and my physics classes covered kinematics and thermodynamics so i've got no education in large scale stuff like this. this is just something i had on my mind. that being said, how does gravity, which to me seems to lead to more ordered states since things are "sticking together" in a sense, exist and contradict the universe's preference for chaos and disorder? [link] [comments]  |
| Why is Earth the most dense planet and Saturn the least dense? Posted: 05 Nov 2018 07:24 AM PST |
| Is it possible to medically determine a person's age? and by what degree of accuracy? Posted: 04 Nov 2018 09:26 AM PST People can falsify their age for any particular reason. Is it possible to medically determine a person's age? If so, how? Is this easier/harder as they become older? Thanks in advance :-) [link] [comments]  |
| Does the amount of gas you burn change depending on your elevation? Posted: 04 Nov 2018 08:52 PM PST For example, would someone in Orlando, Florida burn more or less gas than someone in Denver, Colorado? Does a higher elevation affect fuel efficiency? [link] [comments]  |
| Why is Oil used as coolant and heater despite having poor thermal conductivity? Posted: 04 Nov 2018 07:11 PM PST Oil has poor thermal conductivity. It has poor conduction property for being liquid and poor convection property for being viscous. [link] [comments]  |
| Posted: 04 Nov 2018 11:58 PM PST |
| Why are many instruments made of brass? What about the material makes it suitable for music? Posted: 04 Nov 2018 08:31 AM PST |
| How much adrenaline is released during an adrenaline rush? Posted: 04 Nov 2018 11:23 PM PST And, is there a scenario where someone can die from generating too much adrenaline? [link] [comments]  |
| Why aren’t solar powered phones a thing yet? Will it happen in the future? Posted: 04 Nov 2018 07:28 PM PST |
| Posted: 04 Nov 2018 11:48 PM PST |
| How do polymer scientists know what new polymers to create and test? Posted: 04 Nov 2018 11:30 AM PST There are general trends in polymer science (structure/property relationships), but I'm so curious about how scientists developing new plastics, cosmetics, textiles, consumer products, etc. know what polymers to test if they are designing completely new polymers? Is it like a guess and check iterative process? Are there tools you use? It seems like it would take years to get anything successful to market, and we may not even discover the best polymers! Calling all scientists who work on plastics, cosmetics/beauty, textile materials, polymer materials in general, etc. Would love to hear any thoughts/your experience :) [link] [comments]  |
| Posted: 04 Nov 2018 05:34 AM PST |
| Posted: 04 Nov 2018 06:41 PM PST |
| How do we know determine the half-life of an isotope? Posted: 04 Nov 2018 05:27 PM PST My question is this: How have we determined the half-life of certain isotopes to be in the billions of years if we haven't been able to observe them long enough to ever seem them decay? [link] [comments]  |
| Do DNA base pair lengths differ? Posted: 04 Nov 2018 02:51 PM PST My class is working with pymol, and people are measuring completely different lengths for different CG hydrogen bonds. Should all CG base pairs be the same length? Or can the length of the hydrogen bonds differ? [link] [comments]  |
| Posted: 04 Nov 2018 04:55 PM PST I've experienced hail and seen videos of large hails. How does actual hail get so big? [link] [comments]  |
| How do sea slugs and sea snails not perish from ocean salt? Posted: 04 Nov 2018 05:23 AM PST You know like snails and slugs if you put salt on them they die How Do sea snails and slugs work? [link] [comments]  |
| can a wave be longitudinal and transverse at the same time? Posted: 04 Nov 2018 04:19 PM PST if so, why and how? and what would be an example of such wave? [link] [comments]  |
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