A team of geologists drilled through strange formations dotting the Great Salt Lake's drying playa, and were surprised by what they found.

Lava flows, near mile-thick glaciers and ice age floods layered and carved up this landscape.

Abstract: The Paranapanema River is an important, extensively explored tributary of the Upper Paraná River basin. The fish fauna of the Paranapanema River has been investigated since the 1990s; ...