Earth and Planetary Sciences · Oceanography

Marine and environmental studies

Past ice ages sometimes cut the Arctic off from the Atlantic

A study finds that the Arctic Ocean and Nordic Seas were sometimes largely isolated from the North Atlantic during past ice ages. The connection appears to have reopened rapidly as the ice ages ended, raising questions about effects on the global ocean circulation system.

5 days ago·45 views

Society & Economics

How Greek engineers shaped Apollonia into Cyrene’s harbor

A study of Apollonia, Cyrene’s harbor on Libya’s coast, reconstructs how early Greek engineers adapted natural rock ridges and small islands into a working port. It also finds that tectonic movements changed the shoreline and submerged much of the harbor, making its remains harder to interpret.

3 weeks ago·40 views