has been working to change the world since he was 14.

aggressive three-ton animals is complicated.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.

once the private estate of drug kingpin Pablo Escobar who imported three female hippos and one male decades ago in Puerto Triunfo.A group of hippos was brought in the 1980s to Hacienda Npoles.Colombia on Tuesday began the sterilization of hippopotamuses.

Most of the animals live freely in rivers and reproduce without control.including allergic reactions to anesthesia or death.

Fernando Vergara / AP Independent journalist Audrey Huse.

Escobars private zoo that became a tourist attraction after his death in 1993Perseverance will descend directly to touchdown near an ancient river delta where water once flowed and where traces of past microbial activity might be present.

the spacecraft will brake into orbit around Mars in February 2021.So its about the future of our economy.

Its about the post-oil economy.UAE minister of advanced sciences and chair of the Mohammed Bin Rashid Space Center.