Megalodon — a giant predatory shark that has inspired numerous documentaries, books, and blockbuster movies — likely went extinct at least 1 million years earlier than previously thought, according to new research published in PeerJ — the Journal of Life and Environmental Sciences. Earlier research, which used a worldwide sample of fossils, suggested that the 50-foot-long, giant ...
Scientists have sequenced 15 ancient DNA genomes spanning from Alaska to Patagonia and were able to track the movements of the first humans as they spread across the Americas at “astonishing” speed during the last Ice Age, and also how these Ice Age tribes interacted with each other in the following millennia. The results have ...
Hundreds of hikers each day pass by the fallen boulder along the Bright Angel Trail in Grand Canyon National Park. It might otherwise go unnoticed except for the 28 indentations — sloping tiny footprints left behind by a small, reptile-like creature about 310 million years ago — that cover the rock’s expansive surface. Steve Rowland, ...
Tulane University researchers, documenting the discovery of dozens of ancient lowland maya civilization cities in northern Guatemala through the use of jungle-penetrating Lidar (light detection and ranging) technology, have published their results in the prestigious journal Science. The article includes the work of Marcello Canuto, director of the Middle American Research Institute at Tulane, and Francisco ...
Millennia ago, ancient farmers cleared land to plant wheat and maize, potatoes and squash. They flooded fields to grow rice. They began to raise livestock. And unknowingly, they may have been fundamentally altering the climate of the Earth. A study published in the journal Scientific Reports provides new evidence that ancient farming practices led to a rise ...
Recently, scientists from China and the UK reported two Middle-Late Triassic entomofaunas, providing not only the earliest records of several modern insect elements, but also new insights into the early evolution of freshwater ecosystems. This study confirms that holometabolous and aquatic insects experienced extraordinary diversification about 237 million years ago. The research was published in Science ...
Researchers who’ve analyzed ancient mitochondrial (mt) DNA isolated from a 22,000-year-old panda found in Cizhutuo Cave in the Guangxi Province of China — a place where no pandas live today — have revealed a new lineage of giant panda. The report, published in Current Biology, shows that the ancient panda separated from present-day pandas 144,000 to ...
About 700 million years ago, the Earth experienced unusual episodes of global cooling that geologists refer to as Snowball Earth. Several theories have been proposed to explain what triggered this dramatic cool down, which occurred during a geological era called the Neoproterozoic. In a new study published in the April issue of the journal Terra Nova, ...
Researchers have pieced together the three-dimensional skull of an iconic toothed bird that represents a pivotal moment in the transition from dinosaurs to modern-day birds, the first bird beak. Ichthyornis dispar holds a key position in the evolutionary trail that leads from dinosaurian species to today’s avians. It lived nearly 100 million years ago in North ...
New archaeological evidence shows that humans were living in the Philippines by 709,000 years ago — hundreds of thousands of years earlier than previously thought. Stone artifacts were found by an international team of researchers, including Dr. Gerrit “Gert” van den Bergh, from University of Wollongong’s Centre for Archaeological Science, at an excavation at Kalinga on Luzon, ...
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