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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

How fast does the Milky Way spin? How far does Earth move through space in a year?

Submitted by Sabre-Tooth-Monkey t3_zyesvt on December 29, 2022 at 8:00 PM

206 comments

2,100

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

How do fusion scientists expect to produce enough Tritium to sustain D-T fusion (see text)?

Submitted by DanTheTerrible t3_zslth0 on December 22, 2022 at 1:14 PM

203 comments

836

In House M. D. there is an episode in which the doc asked the lady who was concerned about weight gain. Doc asked her to raise their hand and by seeing that he was able to determine she was pregnant. Do arms and pregnancy have some correlation?

Submitted by Abhinav_Mani t3_ypne1u on November 8, 2022 at 2:11 PM

203 comments

1,384

How do shifts work on really long medical operations?

Submitted by TerjiD t3_zww6ac on December 28, 2022 at 1:14 AM

202 comments

686

How do medical researchers obtain lab animals with diseases like specific forms of cancer which arise spontaneously? Do they raise thousands of apes and hope some eventually develop the disease?

Submitted by userbrn1 t3_yt84g7 on November 12, 2022 at 2:11 PM

197 comments

1,690

What are more accepted hypotheses that similarly explain the aspects of hominid evolution that the "pseudoscientific" aquatic ape theory does?

Submitted by KEVLAR60442 t3_118d3ig on February 21, 2023 at 7:31 PM

196 comments

1,365

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

Light traveling through a medium that slows it. Does the same photon emerge?

Submitted by TheGandPTurtle t3_111g7s9 on February 13, 2023 at 6:30 PM

194 comments

1,100

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

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

Why don't we have Neandertal mitochondrial DNA?

Submitted by nodeciapalabras t3_ylu0ir on November 4, 2022 at 9:35 AM

184 comments

548

(Biology) How far down your spine can you break before respiratory impairment?

Submitted by Anomaly-Friend t3_11ymdjl on March 22, 2023 at 3:24 PM

183 comments

430

What lifeform has the shortest genetic sequence?

Submitted by teafuck t3_xz4njj on October 8, 2022 at 9:52 PM

183 comments

941

Could being submersed in a sealed tank of fluid help humans survive heavy G acceleration in outer space?

Submitted by cheeze_whiz_shampoo t3_zqsvhd on December 20, 2022 at 4:33 PM

180 comments

207

Why do sample return missions such as OSIRIS-REx use their own reentry vehicles instead of just going to the space station for pickup and return with ISS equipment?

Submitted by PromptCritical725 t3_10l6lls on January 25, 2023 at 7:02 PM

177 comments

1,469

If each side of our body is controlled by the opposite brain hemisphere, how do we blink in sync?

Submitted by killians1978 t3_ycrf85 on October 25, 2022 at 12:42 AM

177 comments

1,853

Before Newton, how did people explain falling apples?

Submitted by maugustus t3_zyricz on December 30, 2022 at 4:59 AM

176 comments

604

Is building dams a learned behaviour for beavers?

Submitted by Snoo-82132 t3_y9a6rk on October 20, 2022 at 9:14 PM

176 comments

459

Is COVID unique in the way it affects different individuals in such different ways?

Submitted by stupidrobots t3_1175z6i on February 20, 2023 at 12:56 PM

173 comments

1,569

What happens when a bruise heals?

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

173 comments

2,455

What happens to the energy of sound in space?

Submitted by full_hammer t3_10eku2h on January 17, 2023 at 7:22 PM

171 comments

669

Why not use hydrogen and deuterium in fusion reaction rather than tritium and deuterium?

Submitted by Curious_user4445 t3_zc708c on December 4, 2022 at 11:06 AM

169 comments

1,366

when a limb gets amputated, how do they stop the flow of blood?

Submitted by EnchantedCatto t3_117t3ba on February 21, 2023 at 3:23 AM

168 comments

698