. A new study reveals that the sensitivity of teeth, which makes them zing in a dentist’s chair or ache after biting into something cold, can be traced back to …
Tag:
ancient
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. This illustration depicts the early jawless vertebrate Astraspis being attacked by the sea-scorpion Megalograptus in dark, shallow waters. Both animals likely had tooth-like scales on their bodies that would …
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. Wool garments provide a cozy home for the eggs of body lice, which spread the bacterium Borrelia recurrentis.Credit: Kathy deWitt/Alamy A deadly infection that is spread by body lice …
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. Pregnant women wielding swords and wearing martial helmets, foetuses set to avenge their fathers — and a harsh world where not all newborns were born free or given burial. …