A collection of fossil shells from marine snails and clams is challenging a theory that says the world's deadliest mass extinction was accompanied by severe ocean acidification. The study is the first ...

Harry Lee is giving away $1 million — in shells, that is. These aren’t your usual run of the ocean shells. Some are new species he discovered. Some are named for him. Some are very rare. Lee is ...

Harry Lee is giving away $1 million — in shells, that is. These aren’t your usual run of the ocean shells. Some are new species he discovered. Some are named for him. Some are very rare. Lee is ...