Extinction
Colossal Biosciences says it has created an artificial eggshell that could help produce eggs the size of those once laid by New Zealand's extinct moa. Independent experts caution that the development falls far short of enabling the return of the giant birds.
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Scientists have determined that Nanotyrannus was a mature, separate species rather than a juvenile Tyrannosaurus rex. A new study analyzed a tiny throat bone from the original fossil, revealing growth patterns indicating adulthood. The findings, published in Science, challenge decades of debate over the dinosaur's identity.
A new study shows that the Late Ordovician Mass Extinction around 445 million years ago not only wiped out 85% of marine species but also paved the way for jawed vertebrates to thrive. Researchers from the Okinawa Institute of Science and Technology analyzed fossil data to demonstrate how isolated refuges allowed these early fishes to diversify after the catastrophe. This event fundamentally reshaped Earth's ecosystems, influencing modern marine life.
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Scientists have uncovered shocked quartz at key Clovis-era sites, strengthening evidence that a comet explosion around 13,000 years ago contributed to the extinction of mammoths and other megafauna. This cosmic event, linked to the onset of the Younger Dryas cooling period, may also explain the sudden disappearance of the Clovis culture across North America. The findings, published in PLOS One, highlight extreme heat and pressure signatures inconsistent with volcanic or human causes.