/r/askscience - top ten submissions for each month of 2025

sfw subreddits | << askscience 2024
2025, August
[Pathology] Why is HIV only able to transfer th...
568 [Pathology] Why is HIV only able to transfer th...
Recently scientists found mollusks over 5 miles...
547 Recently scientists found mollusks over 5 miles...
Does blood alcohol concentration have an effect...
518 Does blood alcohol concentration have an effect...
How are blue jays blue? Where did they get blue...
512 How are blue jays blue? Where did they get blue...
How stable are planets, how old do they get?
121 How stable are planets, how old do they get?
Do Carnivores get Alpha-Gal Disease from ticks?
110 Do Carnivores get Alpha-Gal Disease from ticks?
What was the highest spatial resolution for non...
89 What was the highest spatial resolution for non...
Why do colds and some viruses make you feel lou...
86 Why do colds and some viruses make you feel lou...
Why Does some species of Night-Blooming Cereus ...
76 Why Does some species of Night-Blooming Cereus ...
Are picked flowers still capable of photosynthe...
49 Are picked flowers still capable of photosynthe...
2025, July
Is uncooked meat actually unsafe to eat? How li...
1968 Is uncooked meat actually unsafe to eat? How li...
Is it possible to ignite the atmosphere if the ...
542 Is it possible to ignite the atmosphere if the ...
Is a runaway greenhouse event likely, given rec...
276 Is a runaway greenhouse event likely, given rec...
Why do we need body heat?
122 Why do we need body heat?
Do Bacteria Naturally live in Human blood?
105 Do Bacteria Naturally live in Human blood?
Why are chicken embryos used for the production...
92 Why are chicken embryos used for the production...
How does the immune system react to Prions?
83 How does the immune system react to Prions?
What causes the difference in water in rainfore...
70 What causes the difference in water in rainfore...
What is it called when a caterpillar cannot suc...
46 What is it called when a caterpillar cannot suc...
Is artificial light after sunset unhealthy for ...
44 Is artificial light after sunset unhealthy for ...
2025, June
Why do coral reefs only grow in warm shallow wa...
475 Why do coral reefs only grow in warm shallow wa...
Atmospheric oxygen levels in the Carboniferous ...
328 Atmospheric oxygen levels in the Carboniferous ...
How many times did two-eyed animals evolve?
288 How many times did two-eyed animals evolve?
Why can’t we divide by zero (on an arbitrary fi...
216 Why can’t we divide by zero (on an arbitrary fi...
What happens when we say muscle strain?
194 What happens when we say muscle strain?
How long through our sleep, do we start dreaming ?
180 How long through our sleep, do we start dreaming ?
Would 2 pounds of muscle from different animals...
147 Would 2 pounds of muscle from different animals...
If blood clots slower underwater, would fish he...
66 If blood clots slower underwater, would fish he...
Do photons speed change with their wavelength?
54 Do photons speed change with their wavelength?
2025, May
Does the sugar content of fruit change during r...
427 Does the sugar content of fruit change during r...
Why don't more vaccines exist?
261 Why don't more vaccines exist?
Where does the water between two convergent con...
247 Where does the water between two convergent con...
Do misfolded prions always eventually result in...
164 Do misfolded prions always eventually result in...
Do the shorelines of continental plates always ...
86 Do the shorelines of continental plates always ...
Ask Anything Wednesday - Biology, Chemistry, Ne...
65 Ask Anything Wednesday - Biology, Chemistry, Ne...
How does patient 0 contract lice or other infec...
21 How does patient 0 contract lice or other infec...
How do dogs and cats use their sense of smell?
10 How do dogs and cats use their sense of smell?
Okay, this is a weird one: if trees release CO?...
0 Okay, this is a weird one: if trees release CO?...
2025, April
How does too much of a vitamin cause toxicity i...
274 How does too much of a vitamin cause toxicity i...
What are the Neurological Processes that Allow ...
259 What are the Neurological Processes that Allow ...
Could a planet exist entirely covered in water,...
12 Could a planet exist entirely covered in water,...
Why is it the Doppler shift frequency that coun...
6 Why is it the Doppler shift frequency that coun...
For every inch taller you are or for each extra...
1 For every inch taller you are or for each extra...
2025, March
Where does helium go once it escapes our atmosp...
573 Where does helium go once it escapes our atmosp...
Since shingles and chicken pox are caused by th...
569 Since shingles and chicken pox are caused by th...
What makes Denisovans different from Sapiens &a...
308 What makes Denisovans different from Sapiens &a...
I can't understand how light gets "polarised" a...
229 I can't understand how light gets "polarised" a...
Ask Anything Wednesday - Engineering, Mathemati...
137 Ask Anything Wednesday - Engineering, Mathemati...
Does the sun do damage to more than our skin ce...
136 Does the sun do damage to more than our skin ce...
If there was a large caldera capable of VEI 6+ ...
129 If there was a large caldera capable of VEI 6+ ...
Why do fans cool down a room instead of heating...
72 Why do fans cool down a room instead of heating...
When a meningioma is removed, what fills the hole?
71 When a meningioma is removed, what fills the hole?
2025, February
If all the cells in your body are replaced ever...
6544 If all the cells in your body are replaced ever...
Why did basically all life evolve to breathe/us...
2387 Why did basically all life evolve to breathe/us...
For animals like salmon and sea turtles that an...
1061 For animals like salmon and sea turtles that an...
Why do (some) people lose hair as they get olde...
706 Why do (some) people lose hair as they get olde...
Why do AI images look the way they do?
563 Why do AI images look the way they do?
Why does risk of Down’s syndrome increase with ...
431 Why does risk of Down’s syndrome increase with ...
What elements can replace iron in blood and sti...
395 What elements can replace iron in blood and sti...
If you had both a viral and bacterial infection...
390 If you had both a viral and bacterial infection...
AskScience AMA Series: I am a theoretical astro...
330 AskScience AMA Series: I am a theoretical astro...
Does Bird Flu affect all birds? Emus to humming...
329 Does Bird Flu affect all birds? Emus to humming...
2025, January
If teeth are bones, then why if you chip a toot...
1509 If teeth are bones, then why if you chip a toot...
AskScience AMA Series: We just discovered the b...
1058 AskScience AMA Series: We just discovered the b...
Do species with shorter lifespans evolve faster...
1050 Do species with shorter lifespans evolve faster...
Is destroying a whole flock of agricultural bir...
1017 Is destroying a whole flock of agricultural bir...
Is it possible to contain light, and if so, wou...
741 Is it possible to contain light, and if so, wou...
Can you have several illnesses in the same time...
504 Can you have several illnesses in the same time...
What happens to plants on a cellular level when...
369 What happens to plants on a cellular level when...
Are Bees Affected By Capsaicin Or No?
324 Are Bees Affected By Capsaicin Or No?
Do cephalopods know what they’re doing when the...
190 Do cephalopods know what they’re doing when the...
Have there been any innovations in the science ...
107 Have there been any innovations in the science ...