العلوم والبيئة
A 66-million-year-old tooth reveals T. rex was nearly as warm as a human
المصدر: All Top News -- ScienceDaily · نُشر
Chemical clues preserved inside fossilized T. rex teeth reveal that the dinosaur maintained a body temperature of about 97 degrees Fahrenheit, almost identical to humans. The finding provides direct evidence that the giant predator was warm-blooded, helping explain how it stayed
Chemical clues preserved inside fossilized T. rex teeth reveal that the dinosaur maintained a body temperature of about 97 degrees Fahrenheit, almost identical to humans. The finding provides direct evidence that the giant predator was warm-blooded, helping explain how it stayed active and survived in chilly environments as far north as Alaska.
أخبار ذات صلة
A broken rib from the world’s largest T. rex hid a 66-million-year-old secret
A broken rib from Scotty, the largest known T. rex skeleton, contains an extraordinary fossilized network of blood vessels formed while the dinosaur was healing. Scientists used neutron and X-ray imaging to look inside the 66-million-year-old bone without damaging it, revealing d
All Top News -- ScienceDaily ·
A real-time look inside spacecraft heat shields during extreme heat conditions
When a spacecraft reenters Earth's atmosphere at hypersonic velocities, its protective heat shield faces extreme conditions, including temperatures beyond 3,000 degrees Fahrenheit (1,650 degrees Celsius). To survive, the shield relies on specialized materials that absorb heat as
Phys.org - latest science and technology news stories ·
Scientists may have misread a 2-billion-year-old clue about Earth
Scientists have found that a famous 2-billion-year-old chemical signature, once thought to record a massive global change in Earth’s carbon cycle, may instead have been produced by local magma, hydrocarbons, and methane-eating microbes. The discovery raises new questions about wh
All Top News -- ScienceDaily ·
Scientists thought they knew how this 70-year-old leukemia drug worked
A 70-year-old leukemia drug is still revealing new secrets. Researchers found that removing a protein called NUDT5 protected cells from the drug, even though simply blocking the protein had little effect. The unexpected result points to a hidden cellular role that could help expl
All Top News -- ScienceDaily ·
Blood tests find high level of cancer-causing forever chemical in residents near factory
People living near a major chemical factory in Lancashire are told they could be at risk of serious health conditions.
feeds.bbci.co.uk ·