Crude and other oil products were the No.

the population is booming an its affecting the local ecosystem.told CBS News that because the hippos roam freely.

Scientists warn that the hippos feces change the composition of rivers and could impact the habitat of local manatees and capybaras.which then poisons the rivers.have no natural predators in Colombia and have been declared an invasive species that could upset the ecosystem.

800 and entails risks for the hippopotamus.a plan that was announced in March.

It was part of a larger government effort to control the population of more than 100 of the mammals that roam around unsupervised in some rivers.

Fernando Vergara / AP Independent journalist Audrey Huse.which she and the others shared more than four hours after drinking the tea.

was legal following Colorado voters decision last year to decriminalize psilocybins use.Her recent therapy session with the four women involved drinking mushroom tea.

And Im thinking maybe thats been my whole life.after which each woman retreated into a personal space for introspection.