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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 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

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

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

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

askscience

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Created October 1, 2022
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