In the Company of Plants and Rocks

Tweedy's Pussypaws, Lewisiopsis tweedyi , is one of at least 35 species named for topographer and botanist Frank Tweedy.  Thayne Tuason ...

Tiktaalik, what were you thinking?! Zina Deretsky, NSF . In the midst of planning a tour of Paleozoic time in the Great Basin—a way to escap...