Older than expected: Teeth reveal the origin of the tiger shark

The tiger shark is one of the largest predatory sharks known today. This shark is a cosmopolitan species occurring in all oceans worldwide. It is characterized by a striped pattern on its back, which is well marked in juveniles ...

New evidence in search for the mysterious Denisovans

An international group of researchers led by the University of Adelaide has conducted a comprehensive genetic analysis and found no evidence of interbreeding between modern humans and the ancient humans known from fossil ...

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