When you think about sharks, the first thing that might come to mind are huge jaws filled with rows of deadly-looking teeth ... people a year. By contrast, humans are responsible for killing about 100 ...

NOVA: Sharks have an endless supply of teeth ... Some people are almost insensitive to pain, others are highly sensitive. I have done minor surgery on sharks, and they seem not to feel it.

Shark teeth are especially valuable for this purpose. Their abundance and durability make them a treasure trove of information about past environments. However, uncovering patterns in ancient ...

bringing an end to shark trophy hunting charters, taking baby sharks for the aquarium pet trade and the intentional killing or mutilation of sharks for their teeth, jaws or other parts.