How Long Could Life Survive Without Sunlight? Lessons from the Asteroid That Ended the Dinosaurs
By
Silvia Pineda-Munoz PhD
Summary
This article explores how long life on Earth could survive without sunlight, using the asteroid impact that ended the Age of Dinosaurs 66 million years ago as a case study. It describes the immediate aftermath of the Chicxulub asteroid strike, which blasted dust and soot into the atmosphere, blocking sunlight and causing a global collapse of photosynthesis. The article examines which organisms survived the darkness (such as deep-sea creatures, those in caves, and organisms that could enter dormant states) and why, offering insights into the resilience of life and the conditions necessary for survival during planetary-scale catastrophes.
Source
bskyHow Long Could Life Survive Without Sunlight? Lessons from the Asteroid That Ended the Dinosaursclimateages.substack.comKey quotes
· 3 pulledYou are smaller than a grain of sand. You drift with the currents near the sunlit surface of the sea.
Then, without warning, everything changes.
Dust, soot, and other particles are blasted into the atmosphere. Sunlight reaching the surface is blocked.
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