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Why don't giant prehistoric insects still exist?

Three hundred million years ago, dragonfly-like creatures with wingspans stretching 70 centimeters patrolled the skies of a world nothing like our own. These griffinflies, as paleontologists call them ...
Winter transforms the world around us, blanketing landscapes in snow and silencing the buzz of summer. Yet, while we may retreat indoors to escape the cold, insects face a far greater challenge: ...
Ever wonder why it feels like every bug in the world decides to show up on the same day in spring?