You know me, I love a good gradient. These watercolors are from a series called Strata by Mikael Hallstrøm Eriksen, an artis ...

According to a new study published in Proceedings of the National Academy of Sciences, an estimated five kilometers (3 miles) of rock strata were carved away by ancient glaciers during the planet ...

Strata Minerals, which says historical exploration was hampered a 5-35m layer of cover, making it tougher than ever to ...