A newly identified species of ancient shark has been discovered at Mammoth Cave National Park, marking another significant ...

ABC's Morgan Norwood reports on temperatures nationwide rising to triple digits. Meanwhile extreme heat warnings are in effect from coast to coast.

An urgent manhunt is underway in Louisiana after authorities mistakenly released Khalil Bryan, 30, from the Orleans Justice ...

A newly identified ancient shark species, Macadens olsoni, has been at Mammoth Cave National Park. The National Park Service ...