|
|
|
=> Pas encore inscrit ?
Forum - 2453667
Ronaldsen (Hôte)
| | A giant meteorite boiled the oceans 3.2 billion years ago. Scientists say it was a âfertilizer bombâ for life
гей пПÑМП бПлÑÑПй
A massive space rock, estimated to be the size of four Mount Everests, slammed into Earth more than 3 billion years ago â and the impact could have been unexpectedly beneficial for the earliest forms of life on our planet, according to new research.
Typically, when a large space rock crashes into Earth, the impacts are associated with catastrophic devastation, as in the case of the demise of the dinosaurs 66 million years ago, when a roughly 6.2-mile-wide (10-kilometer) asteroid crashed off the coast of the Yucatan Peninsula in whatâs now Mexico.
But Earth was young and a very different place when the S2 meteorite, estimated to have 50 to 200 times more mass than the dinosaur extinction-triggering Chicxulub asteroid, collided with the planet 3.26 billion years ago, according to Nadja Drabon, assistant professor of Earth and planetary sciences at Harvard University. She is also lead author of a new study describing the S2 impact and what followed in its aftermath that published Monday in the journal Proceedings of the National Academy of Sciences.
âNo complex life had formed yet, and only single-celled life was present in the form of bacteria and archaea,â Drabon wrote in an email. âThe oceans likely contained some life, but not as much as today in part due to a lack of nutrients. Some people even describe the Archean oceans as âbiological deserts.â The Archean Earth was a water world with few islands sticking out. It would have been a curious sight, as the oceans were probably green in color from iron-rich deep waters.â
When the S2 meteorite hit, global chaos ensued â but the impact also stirred up ingredients that might have enriched bacterial life, Drabon said. The new findings could change the way scientists understand how Earth and its fledgling life responded to bombardment from space rocks not long after the planet formed. | | | | Giselle (Hôte)
| | When someone writes an post he/she maintains the idea of a user in his/her brain that how a user can understand it.
Therefore that's why this paragraph is perfect. Thanks!
my blog post; demo slot pragmatic (https://nongfag.Go.th/webboard/index.php?action=profile;u=359314) | | | | Jerry (Hôte)
| | Yay google is my king aided me to find this outstanding website!
Have a look at my web-site; Jefri Nichol diperiksa selama 2 jam (https://www.merdeka.com/artis/jefri-nichol-diperiksa-polisi-selama-2-jam-dalam-kasus-dugaan-pengeroyokan-dan-penganiayaan-223974-mvk.html) | | | | Clydetot (Hôte)
| | Auction house withdraws shrunken heads and other human remains from sale following outcry
как ЌПжМП ÑазвеÑÑОÑÑ Ð±ÐµÐ· ÑÑЎа
ÑМаÑала апеллÑÑÐžÑ ÐžÐ»Ðž каÑÑаÑОÑ
ÑÑОÑÑ Ð¿ÐŸ ОпПÑеÑÐœÐŸÐŒÑ ÐºÑеЎОÑПваМОÑ
Ñ ÑегП МаÑаÑÑ ÑазвПЎ
ÑаÑÑПÑжеМОе бÑака в ПЎМПÑÑПÑПММеЌ пПÑÑЎке без ЎеÑей О ОЌÑÑеÑÑва
ЌПжМП лО ÑазвеÑÑОÑÑ Ð±ÐµÐ· ПÑОгОМала ÑвОЎеÑелÑÑÑва П бÑаке
как ЌПжМП пПЎаÑÑ ÐœÐ° ÑазвПЎ без ÐŒÑжа
в лÑбПЌ загÑе ЌПжМП ÑазвеÑÑОÑÑ
какОе ЎПкÑЌеМÑÑ ÐœÐ°ÐŽÐŸ ÐŽÐ»Ñ ÑазвПЎа
ÑазМОÑа ÐŒÐµÐ¶ÐŽÑ Ð°Ð¿ÐµÐ»Ð»ÑÑОей О каÑÑаÑОей
An auction house in England has withdrawn human remains, including shrunken heads and ancestral skulls, from sale following an outcry.
The Swan auction house in Tetsworth, Oxfordshire withdrew more than two dozen lots from an upcoming auction titled âThe Curious Collector Sale,â including an 18th-century Tsantsa shrunken head, which was expected to fetch ?20,000-?25,000 ($26,000-$33,000) and was previously owned by Hugh Hefner, founder of Playboy magazine.
Other withdrawn lots include an ancestral skull from the Solomon Islands, another from the Fon tribe in Benin and a double ancestor skull from Congo.
The planned sale of another piece, described as a 19th-century horned Naga human skull, drew criticism from Neiphiu Rio, Chief Minister of the Indian state of Nagaland.
Rio wrote to Indiaâs External Affairs Minister, S. Jaishankar, asking him to intervene âto ensure that the auction of the human remains of our people is halted.â
In his letter, Rio said he had been informed about the auction by the Forum for Naga Reconciliation (FNR), a grouping of organizations that works to reconcile different Naga political groups, some of which have engaged in armed struggle for independence from India in recent decades.
In its letter to Rio, the FNR said it âcondemns this inhumane and violent practice where indigenous ancestral human remains continue to be collectorâs items.â
âSuch auctions continue the policy of dehumanization and colonial violence on the Naga people,â it added.
Another of those to criticize the planned sale was Laura Van Broekhoven, director of the Pitt Rivers Museum, which is part of the University of Oxford.
âPlease, immediately pull from tomorrowâs auction the human and ancestral remains of Naga, Shuar, Dayak, Kota, Fon, Vili people and other communities in Papua New Guinea, Solomon Islands, Nigeria, Congo, Ecuador, Nagaland, Benin,â she wrote in a post on X on Tuesday. | | | | TimothyKam (Hôte)
| | |
Répondre:
Ensemble des thèmes: 160 Ensemble des articles: 5426 Ensemble des utilisateurs: 51 Actuellement en ligne (Utilisateurs enregistrés): Personne |
|
|
|
|
|
|
Nous sommes en mesure d'évaluer de manière rapide et concrète les taux d’interactivité, la transformation et les retombées de vos investissements pub Internet. |
|
|
Pourquoi facebook?
Facebook est le site international le plus visité en Tunisie, une communauté de plus de 350K personnes (en croissance continue) y passe en moyenne plus d'une heure par jour.
InfoChallenge innove de nouveau en offrant aux annonceurs/agences une approche complète pour profiter au maximum de l'impact de Facebook.
Une palette de services et de produits prouvés permettront à votre marque de s'imposer dans cet espace dynamique, moderne et populaire dans le cadre de la politique d'image de la marque, du targeting et de tout les paramètres stratégiques de vos campagnes.
|
|
www.manpower-tunis.com
écrivez-nous:
rdv@manpower-tn.com |
|
|
|
|
|
|
|