Friday 23 April 2021 ,
Friday 23 April 2021 ,
Latest News
  • Adopt ‘immediate action plan’ to cut carbon emissions, PM urges developed countries
  • Nothing to worry about vaccine stock: FM
  • Not possible to increase bed number so often: Minister
  • Overall progress of metro-rail construction reaches 61.49pc: Quader
  • PM to address climate summit today seeking $100b annual fund
  • ‘Shishu Bokta’ Rafiqul put on 7-day remand
  • Govt signs $250m deal with WB to create better jobs
  • WHO seeks next steps in Covid origins probe
  • Bangladesh reports 98 Covid-19 deaths, 4014 fresh cases
  • Bangladesh reports 98 Covid-19 deaths, 4014 fresh cases
11 July, 2018 00:00 00 AM / LAST MODIFIED: 10 July, 2018 10:07:43 PM
Print

Scientists find ‘world’s oldest’ biological colours

AFP
Scientists find ‘world’s oldest’ biological colours

SYDNEY: Australian researchers have uncovered the world’s oldest biological colour in the Sahara desert, in a find they said yesterday helped explain why complex lifeforms only recently emerged on earth, reports AFP.

The pink pigments were produced by simple microscopic organisms called cyanobacteria more than 1.1 billion years ago, some 500 million years older than previous colour pigment discoveries.

That makes the samples around “fifteen times older” than the Tyrannosaurus Rex dinosaur species, according to senior Australian National University researcher Jochen Brocks.

Earth itself is about 4.5 billion years old and researchers said the latest find shed light on why more sophisticated plant and animal life only came into existence 600 million years ago.

Previous research argued that low oxygen levels in the atmosphere held back the evolution of complicated lifeforms, but the discovery of cyanobacteria at such an early date suggests that the organisms crowded out more plentiful food sources such as algae.

“Algae, although still microscopic, are a thousand times larger in volume than cyanobacteria, and are a much richer food source,” Brocks told AFP.

 

 

Comments


Copyright © All right reserved.

Editor : M. Shamsur Rahman

Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Editor : M. Shamsur Rahman
Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Disclaimer & Privacy Policy
....................................................
About Us
....................................................
Contact Us
....................................................
Advertisement
....................................................
Subscription

Powered by : Frog Hosting