The highly adaptable lystrosaurus used its constantly-growing tusks to help it forage among ground vegetation and dig for roots and tubers. The species was one of a minority which outlived the ...

Lystrosaurus seems to have followed a different path, one based on large, yolk-rich eggs and young that were likely precocial. Large soft-shelled eggs may also have helped in another way. Bigger eggs ...

Mass extinctions have radically influenced the history of life on Earth. Will we eventually succumb to such a catastrophe? Perhaps, but, in her new book Scatter, Adapt, and Remember, io9 editor in ...