National Geographic announced it has acquired the streaming rights to "Ghost Elephants," which is written, directed and narrated by Werner Herzog and features National Geographic Explorer Steve Boyes.

For more than a decade, conservation biologist Steve Boyes searched for "ghost elephants"—nocturnal giants rumored to roam a ...

"The largest elephant ever. It doesn't matter if they are a dream or reality." National Geographic's latest documentary film, "Ghost Elephants," follows Nat Geo explorer Steve Boyes to locate the ...