86AskScience Panel of Scientists XVIII
261AskScience AMA Series: "I am Rhett Allain, physicist and technical consultant on Mythbusters and MacGyver. Ask me about the physics of pretty much anything!
6676Can humans "sense" testosterone/estrogen release from the opposite gender?
347Can dogs observe and recognize aging in adult humans? Do they differentiate between young adult, middle-aged and elderly humans?
10947When does a mushroom die? When it's picked? When it's packaged? Refrigerated? Sliced? Digested?
25Is it possible to transform martian soil into fertile soil through bacteria and fungi?
48Why do things like saliva or melted cheese pull into strings when you try to separate them?
7Why does the taste of tap water vary between locations?
23I think I understand the difference between aleph-null and aleph-one as countable and uncountable infinities, but what is aleph-two?
9What is the most amount of electrons forcibly added to an atom?
5735Does a Mayfly, which only lives a day, evolve fast than a human?
5If the vaporization point of water can be changed by increasing pressure, is the freezing point also affected by pressure?
7The failed recovery of the Falcon Heavy's central core was attributed to the booster running out of TEA-TEB. How does this happen if the amount of fluid needed to ignite the engine, and the number of ignitions required is known beforehand?
2Do any of the stars we can observe with tbe naked eye at night have planets orbiting them?
3How do we know what an asteroid is made of?
5Could a spacecraft under constant acceleration ever reach near-lightspeed?
6How does a "loop sensor" in a street work?
5How do developers of Nuclear Weapons either keep (or protect themselves from) radioactive materials like Plutonium-239 from potentially ‘leaking’ out particles? Are there any methods to contain these particles from escaping the material so they won’t hurt biological matter near the material?
7How far can the human eye see?
2What does hacking usually entail? How much of it is like the glamorous stuff we see on tv and how much is just calling and asking for a password?
1I've heard that catfish have ring shaped pupils, however this rather surprising adaptation is only ever mentioned in passing. Can anyone provide more information on this?
3Why are the late derivatives of position so weirdly named?
4We often see water used as a neutron moderator in fission reactors due to its high Hydrogen content. Would gaseous Hydrogen be a more effective neutron moderator?
3Could a neutrino interact with a water molecule in my eye and release a photon that I could "see"?
1Is the threshold frequency for alloys based on the elements in the alloy, or is it a different factor in the photoelectric effect?
0Do cats purr voluntarily or unvoluntarily?
14When a Li-ion battery is first manufactured, is it already charged? If so, how much and why that amount?
22Are mitochondria significantly different in different species?
1How do power outages cause transient voltage spikes?
0How did scientists choose the elements and method by which to create an atomic bomb?
16If the four dimensions of space and time are intertwined, why can we not rotate an object into "time" the same way we can rotate an object in 3D space?
133As a snake grows in length, does it grow additional ribs and vertebrae, or do they have a set number?
2If an event happens an average of every x years, and it is been >x years since it last happened, are we more likely to experience the event? If so, can this likelihood be predicted?
0Will checkpoint inhibitors (PD1/PD-L1, CTLA4) cause the host immune system to generate neutralizing antibodies?
6At an atomic level, what makes a material better at compression or tension?
32Why isn't Boron created through normal stellar nucleosynthesis (i.e. nuclear fusion in stars)?
4Why does halorhodopsin only activate when exposed to yellow light and channelrhodopsin with blue light?
46What is special about sunlight versus artificial light that plants need it?
1Are there any approximations for masses of the various continents of Earth?
6Do male species having lower life expectancy than female also occur in other animal species than human?
11How much complexity can nuclear pasta phases in neutron stars support? Could one potentially have strong-force-based life in a neutron star?
30Do other animals have 'accents' like humans do?