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Scientists have discovered world's oldest colour: It's pink


Digital writers
theweathernetwork.com

Wednesday, July 11, 2018, 5:24 PM - It turns out pink has always been in style.

According to a recent study published in The Proceedings of the National Academy of Sciences in the US, ancient, pink pigments have been discovered in rocks in the Sahara Desert.

The rocks, which are more than a billion years old, lie within the Taoudeni Basin of Mauritania in West Africa.

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Scientists discovered the pigments by crushing the rocks into powder and extracting the molecules of the organisms inside.

Researchers say the pigments are the oldest colours in the geological record.

"The bright pink pigments are the molecular fossils of chlorophyll that were produced by ancient photosynthetic organisms inhabiting an ancient ocean that has long since vanished," Dr. Gueneli said in a news release.

The discovery also confirmed the theory that microscopic bacteria called cyanobacteria ruled the global food chains long before animals came into existence.

"The precise analysis of the ancient pigments confirmed that tiny cyanobacteria dominated the base of the food chain in the oceans a billion years ago, which helps to explain why animals did not exist at the time," Dr. Gueneli said.

The bacteria began its decline 650 million years ago, thanks to the evolution of algae, which was able to support animal life and usher in a new era of evolution.

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