Costa Rica - Plastic Ban (Harris Whitbeck) 14:35The Central American nation of Costa Rica has long been at the forefront of progressive environmental policies. But it's lagged behind in one crucial area, the safe disposal of solid waste. But that could all change with their goal to end "single use" plastics by the year 2020 along with a new motto, "Say no to plastic". Our correspondent Harris Whitbeck reports from San Jose, Costa Rica.Brazil - Samba Empire (Lucrecia Franco) 11:12Some call it the... [see more] greatest show south of the equator: the Samba parade in Rio. Thousands of dancers from Brazil's top Samba schools perform in extravagant costumes. This year, Brazilian dancers from the Imperio Serrano school are telling the story of China -from the Great Wall to the ancient Silk Road. Correspondent Lucrecia Franco follows their path. Musical - Black and White carnival 1:30 It is Carnival season. Festivities take place all over Latin America with many countries showcasing fantasy, color and dance. In Colombia, in the small town of El Pasto, thousands take part in the "Blacks and Whites Carnival each year, a celebration recognized by UNESCO. We use the images of culture from the Andean, Amazonian and Pacific regions of the country for our end/musical piece this week.