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1500 questions
16
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2 answers
What is the name of this biting bug?
I just was bitten by a bug!!! It is 3mm long and has large pincers. Here is a photo:
I live in Colorado. Any help identifying it would be great.
Murenrb
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16
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1 answer
Telling distance with one eye
Basic mathematical/logical reasoning makes it clear that you need two eyes to have depth of vision. By seeing an object from two perspectives, our brain can calculate the distance of the object based on the angle from each eye to the object. However…
Clangorous Chimera
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16
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Is agriculture really a net contributor of greenhouse gases?
A lot of scientific studies and credible sources indicate that agriculture is one of the major contributors of greenhouse gases. The exact numbers seem to vary a lot, I've seen everything from 8% to 45% of global greenhouse gas emissions.
What makes…
Magnus
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16
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3 answers
Is prion a term used to describe the normal form of the protein as well as the disease causing form?
I've been reading my textbook and it refers to prions as a normal protein with a helpful function but it can turn into a disease causing form. However, I look in my other textbook and it refers to the word prion as solely being a disease causing…
Aswin Abraham
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16
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2 answers
What species is this black, blue and white bird?
I think this species is native to Edmonton, Alberta, Canada, as I see it regularly, especially around the urban locality (Downtown Edmonton).
Season: Early Spring
Date: May 18, 2017
Basic Description: Medium sized bird, and I was not able to observe…
Imtiaz Raqib
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16
votes
1 answer
What is this insect in North Carolina?
This insect is in my house in North Carolina, USA. I think it shares similar body features of that of a wasp, but it is far too narrow and has what appears to be a long stinger. What is it?
Evander C
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16
votes
2 answers
Do humans learn to distinguish different senses?
Does a human being learn to differentiate between its senses at some stage in their development? Is there a time when it, for example, cannot tell if an input is a taste or a visual image?
The question came to me because food may taste different…
B.Swan
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16
votes
1 answer
Where does moss come from?
I've been growing plants in pots for several years, and in some of my pots a patch of green moss appears and steadily grows to fill the whole surface area of the soil. But that doesn't happen in other pots. I've used different bags of soil for…
user1306322
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16
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1 answer
At what age do babies begin to synthesize their own antibodies?
When babies are first born, they receive their antibodies from their mother (I assume because they do not yet have the capacity to synthesize their own). So my question is, at what age do babies begin synthesizing their own antibodies?
Whitney
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16
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1 answer
Why are these trees leaning, but no trees around them are?
This was observed in Florida.The trees on the left have a distinct lean to them, but none of the other trees in the area are leaning, why is this?
I'm not sure what other information is pertinent or what else I should look for.
NotAGenie
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16
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2 answers
Why do mosquitoes hover over our heads?
So I play soccer in evening at a nearby park. I noticed many times that after the game and even during it many mosquitoes hover over some of us. They sort of form a structure like a tornado.
The more the one is sweaty, the more the mosquitoes.
What…
AScientist
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16
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1 answer
Is female the default sex in humans?
I was taught in school that female is the default sex in humans based on the following logic:
Development into a human male requires the activation of the SRY gene in the foetus. If that doesn't happen (because there is no Y chromosome, or for some…
user1205901 - Слава Україні
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16
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2 answers
Australian Tree Identification - maybe pine?
Can you help identify this species?
(Link to imgur album with all images)
It was growing next to the Yarra River (maybe 10 meters from the bank) in Melbourne. At first I thought it was a type of pine however this page says Australian pines at…
Felix Eve
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16
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2 answers
Identifying a thin, black, worm-like creature with a hammer-shaped head
I came across the creature shown in the photo below yesterday evening while walking the dogs. At first, I thought it was an earthworm, but a flashlight revealed it to be something I had never seen before.
It is approximately 12 inches (300 mm) in…
Graham Mattsson
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16
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2 answers
Bending your little finger without bending ring finger
It is possible to bend each finger without bending any other, except one for most people. It is more difficult for the ring finger, but when I try to bend my little finger independently my ring finger bends as well. I don't know if this is because…
Beastly Gerbil
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