A widely-used online Ukrainian battlefield map appeared to show Ukrainian forces no longer in control of the town of Sudzha ...

It covers nearly three-quarters of our planet but the ocean floor is less mapped than the moon, an astonishing fact driving a ...

Explorers have discovered the sunken wreckage of one of the first steel cargo ships to travel the Great Lakes.

W.F. Strong points to how geological features defined over a century ago hold lessons for water challenges in the future.