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Why are coastlines crinkly near the poles but smooth in the tropics?

Submitted by emsot t3_1098uax on January 11, 2023 at 4:27 PM

205 comments

5,264

What causes raised ridges in human fingernails/toenails?

Submitted by afcagroo t3_11v4ne1 on March 18, 2023 at 11:37 PM

195 comments

4,291

What happened to the old COVID variants, like Delta? Could they come back?

Submitted by number1dork t3_120rixo on March 24, 2023 at 5:29 PM

209 comments

3,359

If freezing tissue generally damages the cells, how are we able to freeze human eggs and embryos for birthing later?

Submitted by badblackguy t3_z37grx on November 24, 2022 at 2:08 AM

135 comments

3,197

Around 550 million years ago the earth's magnetic field almost collapsed, but then strengthened a few million years later. Scientists say this may have been due to the formation of the inner core. But why exactly would that cause the magnetic field to get stronger?

Submitted by somethingX t3_122dugg on March 26, 2023 at 6:54 AM

73 comments

3,164

If nuclear fission in U-235 causes the atom to be split into 2 smaller atoms (such as Kr-92 and Ba-141) then how is it that U-236 is produced as waste since the U-235 was just split into smaller peices?

Submitted by Ian98766 t3_10e7vgv on January 17, 2023 at 9:17 AM

165 comments

3,142

Does the salinity of ocean water increase as depth increases?

Submitted by rhinotomus t3_y23ytd on October 12, 2022 at 1:27 PM

185 comments

3,098

Is NaCl relatively common in the galaxy/universe?

Submitted by PHealthy t3_124xb33 on March 28, 2023 at 6:13 PM

154 comments

3,084

South-west Astrakhan, Russia, has some interesting geographical features I've never seen before. Is there a name for this phenomenon, and how is it formed?

Submitted by zyphelion t3_y9re96 on October 21, 2022 at 11:35 AM

93 comments

3,076

When it's said 99.9% of human DNA is the same in all humans, is this referring to only coding DNA or both coding and non-coding DNA combined?

Submitted by PeanutSalsa t3_y4t646 on October 15, 2022 at 5:08 PM

150 comments

2,910

What does a muscle knot look like?

Submitted by annieca2016 t3_yk1k2n on November 2, 2022 at 10:29 AM

119 comments

2,695

AskScience AMA Series: I'm a wildlife filmmaker who's spent years tracking and filming the endangered ocelot population in Texas. Ask me anything!

Submitted by AskScienceModerator t3_z0x8ye on November 21, 2022 at 12:00 PM

191 comments

2,599

I just learned that the known shortest DNA in an “organism” is about 1700 base pairs in a certain virus. Is there a minimum amount of “code” required for an organism (or virus) to function in any capacity?

Submitted by mcbergstedt t3_11nbzho on March 10, 2023 at 2:29 AM

164 comments

2,580

Does cold temperature make vistas more 'crisp' looking?

Submitted by colorado_hick t3_100y631 on January 2, 2023 at 12:26 AM

163 comments

2,572

Post viral cough: why does it get worse after you get better?

Submitted by [deleted] t3_zgu1hn on December 9, 2022 at 10:52 AM

166 comments

2,502

Does the cerebral spinal fluid of people with Alzheimer's have a notably different pH from 'normal' people's?

Submitted by wrhollin t3_yfothk on October 28, 2022 at 1:54 PM

71 comments

2,473

What happens when a bruise heals?

Submitted by DwagonFyre t3_xxadwj on October 6, 2022 at 5:03 PM

173 comments

2,455

(Virology) Has SARS-CoV-2 outcompeted all the other coronaviruses which have been called the ‘common cold’?

Submitted by jsgui t3_10va8f7 on February 6, 2023 at 4:02 PM

163 comments

2,345

What specifically about ginger/menthol/wasabi causes one's sinuses to open?

Submitted by Bartendiesthrowaway t3_zu57vb on December 24, 2022 at 8:07 AM

134 comments

2,344

Why does hand foot and mouth disease (coxsackievirus) cause blisters in the hands, feet, and mouth?

Submitted by aubergine_alibi_ t3_yy1r0r on November 17, 2022 at 9:12 PM

120 comments

2,289

Is there a consensus among the medical community on the treatment of preteen and teens that have gender dismorphia?

Submitted by MayorBobbleDunary t3_ygt9yn on October 29, 2022 at 8:03 PM

136 comments

2,263

Is there any possible relation between the recent earthquakes in Turkey/Syria, Japan and Papua New Guinea?

Submitted by Corvid-21 t3_11cfpqa on February 26, 2023 at 12:20 PM

167 comments

2,247

When prehistoric land masses are depicted, what is the accuracy to which they are drawn. Would the maps produced be useful for navigating that world?

Submitted by TheRealPopcornMaker t3_z5ge3w on November 26, 2022 at 7:59 PM

92 comments

2,236

AskScience AMA Series: We're NASA experts working on SWOT - an upcoming mission that will observe nearly all water on Earth's surface. Ask us anything!

Submitted by AskScienceModerator t3_ypk20c on November 8, 2022 at 12:00 PM

155 comments

2,221

Why can an adult’s GI tract expel C. botulinum spores while an infant can’t?

Submitted by curiousnboredd t3_10nh3ui on January 28, 2023 at 3:04 PM

156 comments

2,195