Score
Title
555
AskScience Panel of Scientists XVII
425
AskScience AMA Series: I am a squid biologist, AMA!
5264
At what point is a particle too small to cast a shadow?
81
How do most wild animals die?
50
What do scientists mean when they say "We only know what makes up 5% of the Universe"? What makes up the other 95% of the Universe and how come we don't know what it is ?
4043
How do our bodies build a tolerance to alcohol?
47
Is there a way to measure sharpness - like a scale of sharpness? Thank you
327
Does the temperature of air effect the distance sound can travel?
12
What prevents people in the United States from contacting Malaria from mosquito bites?
13
When I drop an insect (I.e an ant) from a large height (relative - from my chest to the ground), does it “hurt” as bad as it would for us?
9
Why does tungsten (and the elements around it) have a high melting point?
6449
Why is the Liver one of the only organs that grows back when most of it is removed?
3
If electrons move in a copper wire not by each electron travelling all the way, but by bumping into the one ahead and pushing it forward, how can electricity travel faster than the speed of sound of copper?
279
Since the W and Z bosons that mediate the weak force are not massless, does that mean that the weak force does not propagate at light speed?
7
What is the Furry hypothesis, in relation to quantum superposition, and why is it incorrect?
12
How is a breathalyzer a useful metric when testing blood alcohol content?
10
What is the aspect ratio of a nuclear reactor and why does it matter?
2
Can gases/liquids be contained within a magnetic field?
7
Is there a limit to the number of photons a human iris/brain can capture and process?
122
Are there any computer animations of what a supernova would actually look like in real life? What would it look like?
8
Why will your eyes hurt looking at the sun, but not at a lightning strike?
1
Why does diabetes causes kidney damage?
5
Does the age of sperm affect the offspring it creates?
3
Do extroverts comment more often than introverts on Reddit?
159
Why is the molten salt fueled reactor always associated with thorium? Is thorium more suited for MSFRs than uranium?
3
Why are converging-diverging nozzles preferred over converging only nozzles?
0
Why do solid objects exist?
6
Since Earth is slightly flat at the poles and slightly wider at the equator, are there places on Earth where gravity's force is not perfectly downwards?
29
Why would all the land mass be in on one part of the earth (Pangaea) when it first formed?
4
Why are OLED pixels different from LCD pixels?
9033
How do surgeons avoid air bubbles in the bloodstreams after an organ transplant?
3
Other than causing obesity, what are the health risks to consuming sugar?
0
Do birds eat gravel thinking it is food?
2
What's the link between Kirchhoffs law of radiation and Planck's law?
1
How do certain parts of my body know when to stop hair growing?
4
What is quantum mechanical tunneling in relation to field ionization?
10
How does a cell "know" when to produce a protein?
0
Why is the Moon getting farther away from Earth?
3
Can (polar) animals get Photokeratitis/'snow blindness'?
160
What was the diet of early man before the discovery of fire and how soon after did man start "cooking"?
0
How does brain know if some part of our body is being touched without looking at it?
3
Are the cells comprising the liver homogeneous across the entire organ, or are there functional differences from section to section?
1 RobusEtCeleritas Please remember that you should be able to provide reputable sources for your comments, and they should not contain personal anecdotes about your pets, or other animal behaviors you may have personally observed.
3469 robotmirrornine Radiolab had a podcast episode about this (“zoos”). Big cat predators in zoos are well fed, but they are bored and show low brain activity while in captivity. A squirrel got into a cage and a panther spent hours chasing it and hunting it - like housecats, their brains are set up to be stimulated by hunting and chasing, even if full. In some zoos in China, they have experimented with giving lions live calves to chase and eat. And it’s popular to have tourists buy a live chicken in the zoo to send down a tube chute so the big cats can chase and eat it. Edit: panther
4760 Sweet_Taurus0728 House Cats. Seriously. The common, everyday, run-of-the-mill House Cat. They don't kill things because they're hungry, they do it because it's fun. They're more vicious than any Big Cat on Earth. The *only* reason they're not considered as *dangerous*, is because they're so small. ["*The estimated kill rates are two to four times higher than mortality figures previously bandied about, and position the domestic cat as one of the single greatest human-linked threats to wildlife in the nation. More birds and mammals die at the mouths of cats, the report said, than from automobile strikes, pesticides and poisons, collisions with skyscrapers and windmills and other so-called anthropogenic causes.*"](https://mobile.nytimes.com/2013/01/30/science/that-cuddly-kitty-of-yours-is-a-killer.html?referer=https://www.google.com/)
6167 [deleted] [removed]
1258 xKOROSIVEx There are documented cases of mountain lions, wolves, and tigers killing and not eating what they’ve killed. Whether for sport or because their kill drive “stayed on” in relatively close proximity to prey animals after the first kill is unknown.
424 YourFriendlySpidy Foxes will go on killing sprees in chicken coops but only take one or two. Leopards will apparently do the same in ostrich farms. Not sure if it counts as sport hunting since there's no evidence it's premeditated rather than just a blood frenzy
226 TychaBrahe I know that you asked specifically about animals hunting for sport, but I thought you might be interested in another non-food hunting behavior. Lions prey on elephant calves, and elephants understand that. Therefore, [elephants will carry out unprovoked (and provoked) attacks on lion cubs](https://books.google.com/books?id=7ann2dYn9iYC&pg=PA189&lpg=PA189&dq=elephants+kill+lion+cubs&source=bl&ots=l08LB05frh&sig=StRmIAaXVT7FUnXG6pda6ejz2n0&hl=en&sa=X&ved=2ahUKEwi27b-LloDYAhUOON8KHcndDGI4ChDoATAGegQIARAB#v=onepage&q=elephants%20kill%20lion%20cubs&f=false). Presumably they understand that killing the cubs reduces future adults which will prey on their own young.
906 [deleted] [removed]
336 Bobdog1994 Snakehead! Species of fish indigenous to Asia and parts of Africa. Known to be one of the most aggressive fish species alive today due to it attacking and killing anything that comes close to it, for literally no reason. There is a national conversation going on about these fish because they've been introduced into freshwater in the extreme eastern United States, and are taking over since there's no predatory fish that match them, and they can lay well over 20000 eggs in one year. They've been spotted in Florida, Georgia, Maryland, North Carolina, and in parts of some major rivers. EDIT: forgot to mention they CAN BREATHE AIR and live out off water for days at a time. There's a great documentary from nat Geo about them.
87 Throwawayfabric247 If you define hunt as to pursue and not to kill. I believe orcas would be the best definition of hunting for sport. They try techniques to learn how to utilize new tactics. They play with prey and learn from the actions. This hunting for sport or to gain. I'm on mobile so I can only copy one link at a time. https://youtu.be/oxDZW4k8tCY
321 DemenicHand there is a famous story of a tiger that tracked down a human hunter that had taken one of his kills and murdered the guy in his cabin. Lay in wait and murdered him. Elephants too have displayed vicious behavior with immature males forming packs and terrorizing small animals in nature perserves. eventually large adult males were brought in and the behavior stopped
128 fotwfishfeet Chimpanzees are thought to hunt for sport. Some groups of chimps hunt red colobus monkeys and it was once thought that they hunted when their usual sources of food were sparse, but they actually hunted more when they had a steady supply of food (because going on a hunt is a labor intensive activity, so they need plenty of food and time before they can even think about going hunting). One study concluded that chimpanzees share meat after hunting to form strong alliances with other chimps. The study I got this info from is titled "Why do chimpanzees hunt and share meat?" by John Mitani and David Watts.
1 0 RobusEtCeleritas Please remember that you should be able to provide reputable sources for your comments, and they should not contain personal anecdotes about your pets, or other animal behaviors you may have personally observed.
3468 0 robotmirrornine Radiolab had a podcast episode about this (“zoos”). Big cat predators in zoos are well fed, but they are bored and show low brain activity while in captivity. A squirrel got into a cage and a panther spent hours chasing it and hunting it - like housecats, their brains are set up to be stimulated by hunting and chasing, even if full. In some zoos in China, they have experimented with giving lions live calves to chase and eat. And it’s popular to have tourists buy a live chicken in the zoo to send down a tube chute so the big cats can chase and eat it. Edit: panther
4765 0 Sweet_Taurus0728 House Cats. Seriously. The common, everyday, run-of-the-mill House Cat. They don't kill things because they're hungry, they do it because it's fun. They're more vicious than any Big Cat on Earth. The *only* reason they're not considered as *dangerous*, is because they're so small. ["*The estimated kill rates are two to four times higher than mortality figures previously bandied about, and position the domestic cat as one of the single greatest human-linked threats to wildlife in the nation. More birds and mammals die at the mouths of cats, the report said, than from automobile strikes, pesticides and poisons, collisions with skyscrapers and windmills and other so-called anthropogenic causes.*"](https://mobile.nytimes.com/2013/01/30/science/that-cuddly-kitty-of-yours-is-a-killer.html?referer=https://www.google.com/)
6169 0 [deleted] [removed]
1256 0 xKOROSIVEx There are documented cases of mountain lions, wolves, and tigers killing and not eating what they’ve killed. Whether for sport or because their kill drive “stayed on” in relatively close proximity to prey animals after the first kill is unknown.
418 0 YourFriendlySpidy Foxes will go on killing sprees in chicken coops but only take one or two. Leopards will apparently do the same in ostrich farms. Not sure if it counts as sport hunting since there's no evidence it's premeditated rather than just a blood frenzy
225 0 TychaBrahe I know that you asked specifically about animals hunting for sport, but I thought you might be interested in another non-food hunting behavior. Lions prey on elephant calves, and elephants understand that. Therefore, [elephants will carry out unprovoked (and provoked) attacks on lion cubs](https://books.google.com/books?id=7ann2dYn9iYC&pg=PA189&lpg=PA189&dq=elephants+kill+lion+cubs&source=bl&ots=l08LB05frh&sig=StRmIAaXVT7FUnXG6pda6ejz2n0&hl=en&sa=X&ved=2ahUKEwi27b-LloDYAhUOON8KHcndDGI4ChDoATAGegQIARAB#v=onepage&q=elephants%20kill%20lion%20cubs&f=false). Presumably they understand that killing the cubs reduces future adults which will prey on their own young.
905 0 [deleted] [removed]
335 0 Bobdog1994 Snakehead! Species of fish indigenous to Asia and parts of Africa. Known to be one of the most aggressive fish species alive today due to it attacking and killing anything that comes close to it, for literally no reason. There is a national conversation going on about these fish because they've been introduced into freshwater in the extreme eastern United States, and are taking over since there's no predatory fish that match them, and they can lay well over 20000 eggs in one year. They've been spotted in Florida, Georgia, Maryland, North Carolina, and in parts of some major rivers. EDIT: forgot to mention they CAN BREATHE AIR and live out off water for days at a time. There's a great documentary from nat Geo about them.
87 0 Throwawayfabric247 If you define hunt as to pursue and not to kill. I believe orcas would be the best definition of hunting for sport. They try techniques to learn how to utilize new tactics. They play with prey and learn from the actions. This hunting for sport or to gain. I'm on mobile so I can only copy one link at a time. https://youtu.be/oxDZW4k8tCY
324 0 DemenicHand there is a famous story of a tiger that tracked down a human hunter that had taken one of his kills and murdered the guy in his cabin. Lay in wait and murdered him. Elephants too have displayed vicious behavior with immature males forming packs and terrorizing small animals in nature perserves. eventually large adult males were brought in and the behavior stopped
124 0 fotwfishfeet Chimpanzees are thought to hunt for sport. Some groups of chimps hunt red colobus monkeys and it was once thought that they hunted when their usual sources of food were sparse, but they actually hunted more when they had a steady supply of food (because going on a hunt is a labor intensive activity, so they need plenty of food and time before they can even think about going hunting). One study concluded that chimpanzees share meat after hunting to form strong alliances with other chimps. The study I got this info from is titled "Why do chimpanzees hunt and share meat?" by John Mitani and David Watts.