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A Canadian lake best charts humanity’s impact on Earth
  + stars: | 2023-07-15 | by ( Katie Hunt | ) edition.cnn.com   time to read: +6 min
Fossils embedded in rock reveal intriguing details about animals, plants and other life-forms that once called Earth home. ConsequencesCrawford Lake in Ontario is the geological site that best reflects a new epoch recognizing the impact of human activity on Earth, said geologists of the Anthropocene Working Group. The Anthropocene Working Group determined in 2016 that the epoch began around 1950 — the start of the era of nuclear testing. The international research group says that Crawford Lake in Ontario best charts humanity’s impact on Earth. Back then, it took 10 hours to relay a single image to Earth — incredibly slow by today’s standards.
Persons: Crawford, they’ve, Amenhotep III, didn’t, Philippe Martinez, Mona Lisa of Egypt, Thais Rabito Pansani, , Webb, Ashley Strickland, Katie Hunt Organizations: CNN, Conservation, Scientists, MAFTO, Sorbonne University, NASA Mariner, Mariner, NASA Jet Propulsion, CNN Space, Science Locations: Ontario, Brazil, South America, Americas
While G. phoenesis was thought to have been a relatively small species of giant sloth, some ancient sloth species were so big that their fossilized burrows are now caves in southern Brazil that humans can walk through. One of the three pendants made from giant sloth bone. However, Pansani said the team dated other material — sediment, charcoal and other giant sloth bones — from the same layer as where the artifacts were recovered. Many experts are skeptical that humans occupied the Americas any earlier than 16,000 years ago, the study noted. For the new study, Pacheco said the team hadn’t considered the possibility of trying to extract genetic material from the sloth-bone pendants.
Persons: , Thais Pansani, Federal University of São Carlos, phoenesis, Thaís Pansani, Pierre Gueriau, Mírian Pacheco, Pacheco, ” Pansani, Pansani, , ” Pacheco, hadn’t, Organizations: CNN, Federal University of São, Paleobiology, Royal Society Locations: Brazil, Santa, Americas, South America, New Mexico, Russia
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