Paris, May 21, 2025 (AFP) - Teeth hurt? It could be because of a 500-million-year-old fish

NAMPA / AFP

2025-05-21

Ever wondered why our teeth are so sensitive to pain or even just cold drinks? It might be because they first evolved for a very different purpose than chewing half a billion years ago, a study suggested Wednesday. The exact origin of teeth -- and what they were for -- has long proved elusive to scientists. Their evolutionary precursors are thought to be hard structures called odontodes which first appeared not in mouths but on the external arm......

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Health

Paris, May 21, 2025 (AFP) - Prosecutor seeks dismissal in French government Covid response probe

2025-05-21 16:30:37

London, May 21, 2025 (AFP) - England to launch 'world first' gonorrhoea vaccination programme

2025-05-21 12:31:28

Geneva, May 21, 2025 (AFP) - MSF says Israel allowing 'ridiculously inadequate' amount of aid into Gaza

2025-05-21 10:00:28

Geneva, May 21, 2025 (AFP) - MSF says Israel allowing 'ridiculously inadequate' amount of aid into Gaza

2025-05-21 09:30:43

2025-05-21 09:30:33

Washington, May 20, 2025 (AFP) - US limits Covid boosters to over-65s or those at high risk

2025-05-20 22:30:50

Washington, May 20, 2025 (AFP) - US to limit Covid boosters to over-65s or those at high risk

2025-05-20 19:31:00

Geneva, May 20, 2025 (AFP) - WHO adopts landmark pandemic agreement

2025-05-20 19:01:03

Washington, May 20, 2025 (AFP) - US to limit Covid boosters to over-65s or those at high risk

2025-05-20 18:31:08

Geneva, May 20, 2025 (AFP) - Pandemic agreement: key points

2025-05-20 18:01:03

Washington, May 20, 2025 (AFP) - US to seek new trials for existing Covid vaccines in under-65s: officials

2025-05-20 17:30:56

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