Diamonds made in the lab are increasingly difficult to distinguish from those found in nature.
A New Zealand scientist is using the latest DNA detection methods to search for the famed Scottish creature. Claimed sightings go back more than 1,500 years.
Two long-tailed macaques have become the first primates to be cloned using the same process that produced Dolly the sheep. The breakthrough by Chinese scientists could open the door for copying humans in the future.
Fossilized footprints in New Mexico tell a tale of pursuit, misdirection and evasion between ancient humans and the strong giant sloth. The rare find could shed light on how man hunted prey — possibly to extinction.
British and US scientists have developed eggs from an early stage to full maturity in a lab for the first time. The technique could offer cancer patients a promising new type of fertility treatment.
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