How Many Tyrannosaurus Rexes Ever Lived on Earth? Hereâs a New Clue.
An estimation of the iconic predatorâs total population can teach us things about dinosaurs that fossils cannot.
Computer simulations indicated, with 97.5 percent probability, that there were at least 1,300 adult tyrannosauruses at any given time but not more than 328,000.Credit.Science Photo Library/Science Source
April 15, 2021Updated 2:30 p.m. ET
Before they were killed off by a meteor that hit Earth 66 million years ago, some 20,000 adults of the iconic ferocious dinosaur predator â Tyrannosaur rex â roamed North America at any given time, researchers have calculated.
Thatâs not a precise number, and the correct total could be far lower or higher because of uncertainties like how long they lived, how quickly they grew and matured and the rate of their metabolisms. Still, the research, published on Thursday by the journal Science, opens doors in studying long-extinct dinosaurs beyond
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AI Trends
April 15, 2021
By AI Trends StaffÂ
An open access quantum computing testbed from Sandia National Laboratories, called QScout, is now open to the public for research. Â
Funded by a Department of Energy grant, the quantum computer can be used by scientists whose research proposals have been accepted, for no charge, a spokesman for Sandia stated to
AI Trends in an email.Â
Scientists from Indiana University recently became the first team to begin using QScout, the Quantum Scientific Computing Open User Testbed. Â
âQScout serves a need in the quantum community by giving users the controls to study the machine itself, which arenât yet available in commercial quantum computing systems. It also saves theorists and scientists from the trouble of building their own machines. We hope to gain new insights into quantum performance and architecture as well as solve problems that require quantum computat