World's oldest colours shed light on mystery of life on Earth
11 July, 2018, 18:57
An global team led by researchers from the Australian National University (ANU) extracted 1.1-billion-year-old bright pink pigments from ancient rocks deep below the Sahara Desert in Mauritania, West Africa.
"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", said Gueneli from the ANU Research School of Earth Sciences.
According to a press release, researchers pulverized some of the rock to try and extract molecules from any ancient organisms trapped inside.
The color of the fossils ranges from blood red to deep purple in concentrated form, and bright pink when diluted with water. The colors are more than 500 million years older than the next oldest pigments. Grad student Nur Gueneli at Australian National University realized she found something special after mixing the powdered material with an organic solvent. New research has revealed what is thought to be the oldest known pigment created by a living creature... and it's pink.
Biogeochemist Dr. Janet Hope holds an ampoule with pink colored porphyrins. The ancient pigment found in rocks beneath the Sahara desert could be ten times older than the T-rex. The sample from the Sahara may be evidence that the cyanobacteria were the dominant lifeform on Earth over a billion years ago and caused an evolutionary bottleneck. This helps to explain why animals didn't exist at that time.
We know surprisingly little about what the Earth might have been like a billion (or more) years ago.
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.
"Imagine you could find a fossilised dinosaur skin that still has its original colour, green or blue. that is exactly the type of discovery that we've made", Associate Prof Jochen Brocks from the Australian National University (ANU) told the BBC.
Gueneli said the study told scientists a great deal about life on earth more than a billion years ago. "[Gueneli] came running into my office and said, 'look at this, ' and she had this bright pink stuff..." Algae helped support larger life, so it's good that these researchers, who published their findings in the journal PNAS, found the dominant food source of life back then.
They re-signed starting center Jusuf Nurkic, and signed free agent guards Seth Curry and Nik Stauskas . He may have teased some fans with his tweet , but he is happy in Portland and is not seeking a trade.
No wonder he moved up 44 spots on the table to reach No 2 with 842 points, also the best in his short worldwide career so far. Although he only managed 6 and 19 in the next two games, he moved up nine spots to occupy third place.
The Israeli spacecraft, about the size of a dishwasher, measure about 6.6 feet in diameter and about 1.65 feet in height. The launch date is set for December; two months later, on February 13, the spacecraft is expected to land on the moon.
With the prognosis still unknown, the Perez family is praying Angel leaves the hospital with his life and limbs. "Be careful. As for Perez, his daughter says he and his family are relying on their faith to guide them through the situation.
She said she managed to remain calm, holding her wrist above water and using her other hand to stop the flow of blood. When asked why she went ahead anyway, she replied, "It's just a once-in-a-lifetime experience".
The UK's data protection watchdog said the social media giant has failed to ensure Cambridge Analytica had deleted users' data. In Facebook's case this would amount to around US$1.6 billion (€1.4 billion).
As they stood outside the Marlborough House, Meghan affectionately touched Harry's hand, as the pair appeared to share a joke. Meetings with The President of Ireland, Michael Higgins, and with The Taoiseach, Leo Varadkar, are both planned.
Turkish President Recep Tayyip Erdogan makes a speech during a ceremony at the Presidential Palace in Ankara , Turkey, on July 9. There are 16 ministers in Erdogan's streamlined new cabinet, which Erdogan has said will be more efficient and act faster.
When Karius made two awful mistakes in the Champions League final, supporters were furious and the last month and a half has been a process of trying to forgive the German even if forgetting is not an option.
If there is any doubt about what's best for your baby, please seek advice from your doctor or health professional'. And the better babies sleep, the better their parents' quality of life and mental health.
Trump (@ realDonaldTrump ) July 10, 2018NATO countries must pay MORE, the United States must pay LESS. And he said: "Dear America, appreciate your allies - after all you don't have that many ".
Na eases to five-shot PGA Tour victory
Varner shot a four-under 66 on Saturday to tie Kraft at the top entering the final round of A Military Tribute at The Greenbrier. Kraft had a one-stroke lead entering the round, the first time he's led after 36 holes on the PGA Tour.
World's ugliest dog dies weeks after winning title
Brainard had recently brough Zsa Zsa on the Today show to celebrate her victory, just days before her sudden, devastating death. Zsa Zsa spent her first five years of life in a puppy mill in Missouri before she was saved by Underdog Rescue .
The England star Croatia are fearing
Kane won't be short of motivation when England play Croatia , but Lovren's social media activity could have fuelled his fire. Every match at this World Cup is like that.
Oil: Iran sanctions could send to $120 a barrel
Iran plans to reduce its global trade relations only to countries that buy its crude oil , an Iranian MP told Iranian media. The current all-time USA annual output peak was in 1970 at 9.6 million bpd, according to federal energy data.
Actor George Clooney injured in scooter crash in Italy
Clooney did not sustain life-threatening injuries and was discharged from the hospital the same day, leaving with wife Amal . They all came together at the up-market Il Marino di Puntaldia restaurants after George had finished filming .
Myanmar court rules Reuters reporters can face full trial
Adler said the news organization was " deeply disappointed " with the ruling and called the case against the reporters "baseless". Army operations in August 2017 forced more than 700,000 Rohingya, who are denied citizenship in Myanmar, to flee to Bangladesh.
Justin Bieber and Hailey Baldwin spotted kissing in NY park
However, and to the general surprise, the duo was caught kissing passionately in the streets of NY as you can see HERE. A friend of the couple's, Jennifer Stephan, posted a pic to Instagram of the two hugging, which has since been deleted.
Decided victor of the prize "Golden Booker"
Thus, the novel " the English patient " Ondaatje as the best book of the 50th anniversary version of the Booker prize. Ondaatje, who was born in Colombo, Sri Lanka, then called Ceylon, in 1943 is of Dutch, Sinhalese, and Tamil ancestry.