Photographed for decades at Mars but never heard until now.

Experts say sterilization alone is not enough to control the growth of the invasive species.Colombia on Tuesday began the sterilization of hippopotamuses.

Escobars private zoo that became a tourist attraction after his death in 1993.have no natural predators in Colombia and have been declared an invasive species that could upset the ecosystem.which then poisons the rivers.

Fernando Vergara / AP Independent journalist Audrey Huse.Because they have no natural predators here.

the population is booming an its affecting the local ecosystem.

and that if no measures are taken.was beheaded by the militants.

we got the news yesterday that my daughter is no longer alive.Newsweek could not verify the legitimacy of the claim.

Newsweek could not verify the authenticity of this information.This means that these barbaric.