Genes & Cells

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Aging

FOR THE AGES  Peoples’ chronological ages may not match the state of their bodies. New research suggest some people age faster than others. Some factors that contribute to aging may be in the blood.

Woolly mammoths

Woolly mammoths were fat, hairy and could tolerate extreme cold. Now researchers have tracked down some molecular changes that contributed to those adaptations.

Australian bearded dragon

WHEN DRAGONS OVERHEAT  Australian bearded dragons are the first reptiles discovered to change sex in the wild due to overheating, raising questions about how they will cope with climate change.

Genes & Cells

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