Pre-reptile may be earliest known to walk upright on all fours

A newly published analysis of the bones of Bunostegos akokanensis, a 260-million-year-old pre-reptile, finds that it likely stood upright on all-fours, like a cow or a hippo, making it the earliest known creature to do so.

Slow light speeds up the microscopic world

A team of researchers from the University of St Andrews and the University of York has slowed down the speed of light in a process which could have major applications in fundamental science and medical diagnosis.

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