Scientists from across the globe have compiled a major new study of the world's mammals, and it paints a bleak picture. More than 25-percent of mammal species are in danger of extinction. Gerry Hadden reports from the World Conservation Congress in Barcelona.

The Nobel Prize for Medicine has been awarded in part to two French researchers who discovered the HIV virus. But another influential scientist in the field - an American - was left out. Anchor Lisa Mullins speaks with science journalist Jon Cohen.

HIV attacks the immune system

You know it as extortion. In Palermo, Italy, it's called "pizzo" -- so-called 'insurance' from the Mafia. Now a group of shopkeepers have banded together to refuse payment. Nancy Greenleese reports from Palermo.

Host Lisa Mullins explains how the global economic crisis is affecting the emerging economies of Russia, India and Brazil.

The World's Mary Kay Magistad explains to host Lisa Mullins how a $2.3 billion dollar loss at one of China's largest insurance companies may affect U.S. markets.

The World's Laura Lynch reports that European countries are struggling to coordinate their efforts to stabilize their economies.

Global financial crisis

Today on The World: The European countries struggle to coordinate their financial relief efforts; also, a look at how the economic crisis is affecting China's economic reach; and part one of our series, How wars end.