- If infrared light is hot, then why doesn't visible light cook us? Visible light has more energy than infrared, right? - 1 hour
- How do annual vaccines remain in the bloodstream for a year instead of wearing off a few days later? Additionally, why are some shots (I.E. Tetanus) - 5 hours
- What’s stopping the water in lakes from seeping into the soil and ‘disappearing’? - 9 hours
- Would cervical lymphadectomy theoretically improve or worsen multiple sclerosis patients? - 16 hours
- Why can alpha and beta radiation not penetrate particularly thick materials? - 16 hours
- What's the natural form of Asbestos and how is it found in the mineral bed? - 17 hours
- A glass breaks when it experiences a big enough temperature difference. But will repeated, smaller temperature differences over time eventually cause - 19 hours
- Why is music around the world based on octaves? Do they share common roots like the Indo-European languages? Is there music in other parts of the - 19 hours
- There is a scene in the movie Skyfall where the villain removes his upper jaw, exposing his scarred and almost destroyed face, and claims it was due - 19 hours
- Is there a byproduct of the production of alcohol that is destroyed in the process of distillation? - 19 hours
- Is it true that vehicles (cars, semi-trucks, boats) have a tighter right-hand turning radius than a left-hand turning radius? Why is this? - 19 hours
- Why do human fingers have three segments/joints but the thumb and toes only have two? - 19 hours
- Why don't animals like Seals suffer from decompression sickness? - 19 hours
- Do organisms living in complete darkness (caves, deep water, underground) have a circadian rhythm? Most organisms do, but does it ever appear in those - 19 hours
- Are ants and bees susceptible to diabetes? Why or why not? - 19 hours
- Do cephalopods, e.g. squids, octopuses, have a dominant tentacle/arm similar to humans having dominant hands/feet? - 19 hours
- Why doesn't cholesterol build up in places other than the heart and brain? - 19 hours
- How do we get bacteria in our intestines? - 21 hours
- Aren’t all animals part of the carbon cycle? - 22 hours
- How does Riemann integration work with hyperreals? - 23 hours
- If graphene is a single layer of carbon atoms, how would it conduct electricity? - 23 hours
- How conductive is plasma, relative to something like copper or salt water? - 23 hours
- How accurate are modern IQ tests in measuring intelligence? What type of stuff do they measure, is it more right-brain or left-brain? And can someone - 23 hours
- My toddler likes to play with my glasses, and it got me thinking. How do doctors determine babies need glasses? - 29 hours
- What makes and erupting volcano like the 1883 eruption of Anak-Krakatau loud enough to be heard at great distances? - 29 hours
- How different was plant life during the time of the dinosaurs vs now? - 29 hours
- Can specific freckles/moles and their locations on the body be hereditary? - 29 hours
- What are the simplest animals that sleep? Amoebas? Hydras? Water Bears? Zooplankton? Or what? - 29 hours
- What sound does a kangaroo make? Any at all? - 31 hours
- Why do computer bugs affect some systems and not others? And why does this discrepancy happen even with brand new devices, i.e. a new generation of - 31 hours
- Do unvaccinated people pose a danger to vaccinated people? Why or why not? - 32 hours
- How is the frequency response of a microphone determined? - 33 hours
- Is atmospheric pressure due to molecular collisions or gravity? - 33 hours
- When we wake up for a minute in the middle of the night, do we end our sleep cycle and start a new one? - 35 hours
- When is an island an island, and when is it big enough to be "land"? - 36 hours
- Is there a way to create 3D models of small objects, a few cm across, that would be accurate down below a millimeter in resolution? - 37 hours
- How do scientist knew back in the days when chemical elements were discovered if you had a mono constituent substance? - 45 hours
- How do water molecules on opposite spokes of a particular flake "know" to reproduce a specific pattern? - 45 hours
- Are there limits (low or high) to the frequencies that lasers can emit? - 45 hours
- Are nebulae and gas clouds in space dense enough that sound could travel through them? - 45 hours
- I saw a video of someone breathing in a rag of chloroform and getting instantly knocked out. I don’t think that’s real, but it made me curious. - 46 hours