Sharks have been on Earth for ages, but today's sharks turn out to have leaner, meaner bodies than those of extinct sharks.
Sharks can compensate if one of their senses is blocked during hunting.
The hatching is part of a nine-year project into understanding the reproductive behaviors of sharks.
Data on shark attacks and fatalities vary from year to year, and yet sharks are predictable animals. Other forces are at work.
Shark killing in Western Australia is unnecessary according to biologists who have come up with other ways of keeping beaches safe while also keeping sharks alive.
Three out of four common medicines contain animal-derived ingredients. So what's in your cabinet?
The first shark caught under a controversial new Australian culling policy aimed at reducing fatal attacks was shot dead Sunday.
A quarter of the world's sharks and rays are at risk of extinction, according to a new assessment.
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