The four horsemen of the COVID-19 pandemic

It is clear that we must prioritize identifying and alleviating the conditions that made the Covid-19 pandemic possible. Even as it rages, scientists are already asking if it is more than just a virus, but rather a symptom ...

Iceberg

An iceberg is a large piece of ice from freshwater that has broken off from a snow-formed glacier or ice shelf and is floating in open water. It may subsequently become frozen into pack ice. Alternatively, it may come to rest on the seabed in shallower water, causing ice scour (also known as ice gouging) or becoming an ice island.

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