Earth's oldest biological colour discovered in rocks beneath Sahara Desert
11 Juillet, 2018, 18:55 | Auteur: Therese Cote
Scientists believe they have discovered the oldest colours in the world and they are bright pink.
An global team of scientists discovered the oldest color in the geological record in rocks beneath the Sahara desert: the bright pink pigment aged 1.1 billion years old.
"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", Gueneli said in a statement.
It was first announced in the journal PNAS that the discovered fossils reportedly range from a dark blood red to a deep purple, when diluted these become bright pink. The bacteria are thought to be an incredible 1.1 billion years old.
ANU PhD student, Dr Nur Gueneli, discovered the pigments after running an organic solvent through the powdered rock.
The BBC reports that the pigment comes from the chlorophyll of fossilized cyanobacteria, also known as blue-green algae, whose pigment molecules have survived eons in the ground.
The pigments found were produced by photosynthetic organisms that inhabited an ancient ocean.
Facebook to be fined £500,000 over data breaches
A Facebook spokeswoman said the company was cooperating fully with an investigation by Australia's privacy commissioner. Mail.Ru told CNN it had not been contacted by Facebook about its investigation into the misuse of user data.
And that pigment was a fetching shade of pink.
Brocks explained this is an ancient process, but piecing together major events in Earth's geological history helped them date their color discovery.
Considering oxygen levels started to rise around 3.4 billion years ago, that earlier find still left us with a big gap in fossil evidence of sunlight-harvesting pigments. That algae provided the "burst of energy needed for the evolution of complex ecosystems, where large animals, including humans, could thrive on Earth", he said.
Senior lead researcher Associate Professor Jochen Brocks from The Australian National University said that the emergence of large, active organisms was likely to have been restrained by a limited supply of larger food particles, such as algae.
The team of researchers from Australia, Japan and the United States of America also were able to use the pigments to confirm that ancient marine ecosystems were dominated by tiny cyanobacteria, a type of bacteria that obtains energy through photosynthesis. While algae is microscopic, it is many thousands of times larger than cyanobacteria making for a much richer food source.
Il faut lui laisser peu d'espaces. ", avait récemment admis Raphaël Varane au sujet du létal ailier belge". Dans le football moderne, on n'avait jamais connu ça. "C'est un joueur avec un immense talent".
The difference is that my kids are in Madrid, and they have seen the game and they see their father and they want him to be close. Reports in Italy state Chelsea owner Roman Abramovich is focused on signing Roma goalkeeper Alisson.
Photographs taken by someone passing the scene showed the car's front right bumper damaged and Clooney's bike on its side. The car's driver assisted George after the crash and reportedly called an ambulance, according to NBC .
Deux des huit ados sortis jusqu'à lundi sont sous antibiotiques , par crainte d'une pneumonie , et sont dans un " état normal ". Emaciés mais en vie , ils étaient perchés sur un promontoire, à plus de quatre kilomètres de l'entrée de la grotte.
The drug policy consultation was completed in response to the growing opioid crisis happening across the country. The overdose crisis, Dr.de Villa said, is a public-health issue, and deaths stemming from it can be prevented.
Zsa Zsa was named the victor of the 2018 World's Ugliest Dog contest in the San Francisco Bay Area in June. "I'm still in shock". She never really showed much excitement, but yes, she was definitely living it up after she won", Ms Brainard said.
In late June, it demanded its allies halt all imports of Iranian oil from November and said exemptions were unlikely. On Wednesday, Trump said OPEC is "driving oil prices higher", urging the cartel to reduce the price at the soonest.
How to Watch England vs. Croatia
Croatia were forced to work hard for their place in the semis, needing a penalty shoot-out to beat hosts Russian Federation . We feel proud and happy we are in the semifinals, but we do not want to stop there.
Broncos' Madden NFL '19 ratings released
Von Miller is the team's highest-ranked player, as he was one of just seven players in the league to earn a 99-overall rating. Next comes the Atlanta Falcons, Pittsburgh Steelers and New Orleans Saints, each of whom have a rating of 83.
Cakir au sifflet — Croatie-Angleterre
Un match que vous pourrez également suivre via internet sur le site de TF1, MyTF1 et sur le player beIN Sports Connect . Lors du Mondial russe, il a déjà dirigé Maroc-Iran et Nigeria-Argentine (9 cartons jaunes distribués au total).