The United States has revoked the visa of Colombian president, Gustavo Petro, Bolivian authorities have arrested the former head of the country's anti-drug agency after a cocaine lab was found on his premises, young demonstrators have clashed with police in the Peruvian capital, Lima, and other cities angry that all residents over 18 have been told to join a pension scheme, and in Brazil where scientists say the biggest trees in the Amazon are growing larger and in greater numbers than previously thought.
The United States has revoked the visa of Colombian president, Gustavo Petro. Photo: AFP