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Phys.Org
Why meat-eating dinosaurs like T. rex evolved tiny arms - Phys.org

The evolution of tiny arms in several groups of meat-eating dinosaurs was likely driven by the development of strong, powerful heads, which were used to attack prey, according to a new study led by researchers at UCL (University College London) and Cambridge …

Tech, Health & Opinion

Harvard School of Engineering and Applied Sciences
What factors speed up aging? - Harvard Health

Aging isn't determined by genetics alone. Learn which lifestyle, environmental, and health factors may accelerate the aging process....

Space Daily
The Mars helicopter Ingenuity completed 72 flights in an atmosphere less than one percent as dense as Earth's before rotor blade damage grounded it in 2024, and JPL had originally designed it for just five test flights, and the lessons from its overperformance - Space Daily

NASA’s Ingenuity Mars Helicopter was designed to attempt up to five experimental test flights over thirty days. It performed 72 flights over almost three years before rotor blade damage on 18 January 2024 grounded it for good. The follow-on work, inside JPL a…

Space Daily
The Mars rovers carry no clocks set to Earth time, so the engineers driving them shifted their entire lives to a 24-hour-39-minute Martian day, and within weeks JPL staff were sleeping during California afternoons, eating breakfast at midnight, and quietly develo - Space Daily

NASA's Mars rovers run on a 24-hour-39-minute Martian sol, and for the first 90 sols of every mission the engineers at JPL shift their entire lives to match, producing a jet lag no human had experienced before.

Space Daily
There is a single satellite launched by the US Navy in 1964 that is still in orbit, still transmitting, and still being used by amateur radio operators around the world — and nobody at the Navy has been in charge of it for decades - Space Daily

On December 28, 1964, a Thor-Able-Star rocket lifted off from Vandenberg Air Force Base in California and put a small US Navy satellite into a low polar orbit. The satellite was called Transit 5B-5. It weighed about 70 kilograms.

Space Daily
Astronauts on the ISS lose about 1-2% of their bone density per month in microgravity — meaning a six-month mission costs them as much bone mass as a postmenopausal woman loses in a year — and the countermeasures NASA developed to slow that loss - Space Daily

The human skeleton is, on every available physiological measurement, considerably more dynamic than the standard cultural framing tends to credit. The bones are not, as the framing implies, fixed structural elements that the body maintains across decades with…

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