Questions in the Science & Nature category.
Displaying 1 through 20 of 5625 (random). Subscribe:
I live near a shallow tidal lagoon. I often notice that part of the surface is turbulent, part is relatively calm, and there is a sharp boundary (as opposed to a smooth gradient) between these two areas. I don't think the boundary occurs in a consistent place from day to day. How can such a boundary form, and how is it sustained over time (i.e., why don't waves from the turbulent area spill across the boundary)?
Every so often I’ll be outside and smell apricots when there are no apricots in view. I believe some plant is giving off this smell — not an apricot tree, probably, but something with flowers or pollen that smells exactly like apricots. What might it be? [more inside]
Is it better for each pair to have many babies, or for each person to have many babies with different partners? [more inside]
If you are interested in slightly better than a layman's knowledge of black holes, what was your favorite book? Some commonly read authors on this subject are Thorn, Hawking, Bartusiak, and Tyson. Who did the better job of explaining there existence and history of discovery? Any others you especially liked? Perhaps you liked a YouTube video? Black hole scholars and enthusiasts please weigh in!
Tree in my backyard, don't know what kind, pretty tall -- definitely too tall for me to get up where the glowing is -- has maybe two dozen spots, spread throughout the canopy, that glow green after dark. They're BRIGHT! There are also a handful of spots on the nearby phone/power lines, fairly evenly spaced. If you go around the south side of the tree, there are also two red glowing spots. I'm in the Chicago suburbs. What in the heck am I seeing? [more inside]
I've been having discussions with my 5 year old about science and he loves it. What are some basic topics I can discuss with him, with simple 'experiments' to go along with them? [more inside]
If a mixed race child has blue eyes in infancy, does that mean both parents must absolutely have the blue eye gene? (One parent is full Asian.) [more inside]
Is there any other geographic region like the Great Lakes area of western Michigan and eastern Wisconsin? [more inside]
I'd like to give a gift to someone in the form of a tree or trees planted in their name but I'm having trouble finding the best charity/service to use. Does anyone have direct experience with this? [more inside]
I am interested in short term, say 4-6 weeks, volunteering opportunities with wildlife scientists in locations such as Africa, South America. Are there any such options? [more inside]
December 30, 2017
As someone who struggles mightily with getting out of the (outdoor) hot tub on a cold winter night, please tell me what would happen if.. I didn't. Obviously, this question is hypothetical and I realize that I cannot actually live in the hot tub from now until spring (for many reasons). [more inside]
December 27, 2017
Given the tyranny of the rocket equation, why not save mass by pumping fuel and oxidizer into the engines from an external source during liftoff? [more inside]
December 26, 2017
Looking for accessible readings or videos about the Fermi paradox and/or the Drake equation, geared toward an adult layperson, especially someone unfamiliar with either concept. Thank you!
December 16, 2017
You'll often see/hear someone saying "Did you see the rainbow?" Or "Oh yeah I saw that same rainbow". But did they? [more inside]
December 11, 2017
It looks like ISS will transit the sun in Tuscaloosa, AL (33.206667, -87.534722) on Wednesday Dec. 13. The three tools that I've looked at show slightly different ideal locations and times for the transit. Who should I believe:
December 10, 2017
Is the specific enthalpy of fusion for each of the high density forms of water ice; ice III, ice V, and ice VI, lower than that of standard water ice Ih? [more inside]
December 9, 2017
For a potassium source that's not too basic, I'm adding potassium citrate to La Croix sparkling water, which I'm assuming is acidic (carbonic acid?). What is happening when it starts fizzing? [more inside]
December 8, 2017
A good and terribly brilliant friend is currently a college freshman with a life-long enthusiasm for the insect world, and an eye toward a career in entomology. Her passion: spiders. I'd like to find a book on spiders (or on the greater world of insects) for her as a Christmas gift, something special. [more inside]
December 6, 2017
Last night, I saw a bright light in the sky South of Santa Cruz, CA, which was predicted on the radio, but I missed what the object was. [more inside]