The Global Ocean

Callum Roberts, The Pew Charitable Trusts

The Global Ocean
NASA on Unsplash

Long ago, the ocean was a barrier to human movement, a place where the land ended and further progress was impossible. But it was also a provider of nourishment, so we lived by the shore and learned the ways of the sea. Some of the earliest traces of modern humans are from coastal caves in South Africa. Shell remains dating back 164,000 years show that seafood was often on the menu.

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