In studying anoles, Rosario Castaneda is looking at how animals evolve. There are more than 380 species of the lizards in the Americas, and diversity among them is incredible. Some are big, some are small; they're all evolved to fit their own habitat.
President Obama is attending the Summit of the Americas this weekend in Colombia. Anchor Marco Werman asks reporter John Otis in Colombia about the two topics that are likely to dominate the gathering: Cuba's absence and alternatives to the drug war.
Costa Rica's environmentalists for years have been trying to get hunting banned, with little success. So this year, they turned to a popular initiative and forced a bill in front of the legislature. It passed and is poised to make it the first country in the Americas to ban virtually all hunting.
The selection of Jorge Bergoglio as the next leader of the Catholic Church has reopened old wounds from Argentina's past during the Dirty War. But some activists say Pope Francis shouldn't be lumped in with church figures who supported the dictatorship.
Costa Rica, a tropical country known for its national parks and ecotourism, has taken a step to protect its environment. But in this environmentally conscious nation, a new ban on hunting faces obstacles.
Fifty miles. That's about the distance separating the United States and Russia. And it's the answer to today's Geo Quiz. The World's David Leveille takes a look at an old proposal to link Siberia and mainland Alaska by tunnel.