To view this video please enable JavaScript, and consider upgrading to the latest web browser
NOVA - Season 16 Episode 9
Nchịkọta: Scientific detectives test their ingenuity in the effort to find underground oil deposits.
Naanị ndị otu nwere ike ịmegharị ma ọ bụ budata ya n'ọbá akwụkwọ na vidio anyị