Fossil collectors in Florida have discovered an ancient sinkhole, now at the bottom of a river, which holds the remains of animals rarely seen in the state, including a type of giant armadillo, giant ...

Activated in 2017, and again in 2019, its long dormancy captures well the effects of the droughts California has suffered ...

Natural products are small molecules produced naturally by any organism including primary and secondary metabolites. They include very small molecules, such as urea, and complex structures, such ...

Beneath the rolling hills of the Appalachian Basin, an ancient rock formation holds what some are calling America’s greatest ...