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Scientists discover cells that cheat death and rebuild damaged tissue

Scientists discovered a population of cells that can start the process of programmed cell death, survive it, and then help rapidly rebuild damaged tissue. Their descendants become far more resistant to future damage, revealing a mechanism that could improve healing but may also help cancers return after treatment.

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Fall Equinox 2026: When Is the First Day of Autumn?

As summer winds down, the seasonal shift officially arrives with the fall equinox, marking the beginning of astronomical autumn.

  • Autumnal equinox occurs on September 22, 2026
  • Marks start of astronomical autumn in Northern Hemisphere
  • Day and night lengths become nearly equal

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