Search For "million years"
Climate Change: Lessons from latest global warming
Updated : 3 years ago IST
The Paleocene-Eocene Thermal Maximum (PETM), which resembles current and future warming, occurred 56 million years ago and was one of the largest and fastest global warming events in Earth's history. Global temperatures increased by 5-8°C during this phase.
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2.9-million-year-old butchery site reopens case of who made first stone to
Updated : 3 years, 1 month ago IST
According to new research led by researchers with the National Museums of Kenya, Liverpool John Moores University, the Cleveland Museum of Natural History, and the Smithsonian's National Museum of Natural History, early human ancestors used some of the oldest stone tools ever discovered to b
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Sea turtles can adapt to rapidly changing world due to surprise changes in
Updated : 3 years, 1 month ago IST
Around 100 million years ago, a group of land-dwelling turtles took to the oceans, eventually evolving into the sea turtles that we know today. However, the genetic foundations that have enabled them to thrive in oceans throughout the world have remained largely unknown.
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Researchers explain how were galaxies much different in the early universe
Updated : 3 years, 1 month ago IST
The most sensitive telescope now searching for radio signals from cosmic dawn, an era around 200 million years after the Big Bang when stars ignited, has doubled its sensitivity, a new paper reports. While not yet detecting this radiation, the redshifted 21-centimeter line they have put new
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Solar system is estimated to be about 4.57 billion years old: Research
Updated : 3 years, 1 month ago IST
Our solar system is estimated to be about 4.57 billion years old. Previous analyses of ancient meteorites have shown that minerals were created through chemical reactions with water as far back as 4.5 billion years ago. New findings from the Ryugu asteroid samples indicate that carbonates we
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Scientists study 155 new genes to see how humans continue to evolve
Updated : 2 years, 4 months ago IST
Nearly 7 million years ago, modern humans diverged from our chimpanzee ancestors, yet we have since continued to evolve. Within the human lineage, 155 novel genes that spontaneously developed from little fragments of our DNA have been discovered. A handful of these "microgenes" are projected
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Study finds how humans continue to evolve with new genes
Updated : 3 years, 2 months ago IST
Even though we diverged from our chimpanzee ancestors about 7 million years ago, we are still evolving today. The human lineage has 155 novel genes that spontaneously developed from little fragments of our DNA. Some of these novel "microgenes" are thought to be linked to diseases that are un
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Giant extinct marine reptile graveyard was likely ancient birthing grounds
Updated : 3 years, 2 months ago IST
The study offers a plausible explanation as to how at least 37 of these marine reptiles came to meet their ends in the same locality, a question that has vexed paleontologists for more than half a century. The research presents evidence that these ichthyosaurs died at the site in large numbe
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Changes in Earth's orbit may have triggered ancient warming event
Updated : 3 years, 2 months ago IST
Changes in Earth's orbit that favored hotter conditions may have helped trigger a rapid global warming event 56 million years ago that is considered an analogue for modern climate change, according to an international team of scientists.
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Fossil site reveals giant arthropods dominated seas 470 million years ago
Updated : 3 years, 3 months ago IST
Discoveries at a major new fossil site in Morocco suggest giant arthropods - relatives of modern creatures including shrimps, insects and spiders - dominated the seas 470 million years ago. Early evidence from the site at Taichoute, once undersea but now a desert, records numerous large "fre
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Study finds dinosaurs were in their prime before downfall due to asteroid
Updated : 3 years, 3 months ago IST
A landmark study has revealed that dinosaurs dominated the world right up until a deadly asteroid hit the earth, leading to their mass extinction, some 66 million years ago.
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Did you know ancient amphibians had their bones cooked?
Updated : 3 years, 3 months ago IST
Scientists have solved a decades-long mystery as to why ancient tetrapods - amphibian-like creatures that lived over 300 million years ago - preserved in one of Ireland's most important fossil sites seemingly had their bones cooked after they died.
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