Worldfocus producer Channtal Fleischfresser reacts to the Olympic Committee's announcement. The decision makes Brazil the first South American country to host the Olympics.

In Honduras, supporters of deposed President Manuel Zelaya again took to the streets on Tuesday night in defiance of a government curfew. Zelaya has been holed up in the Brazilian embassy in Honduras after sneaking back into the country Monday.

The World Health Organization says that the H1N1 virus hasn't mutated into a more deadly strain. However, WHO officials are warning that the pandemic will hit poor countries especially hard. Michael Novacek of the American Museum of Natural History discusses the dangers.

This weekend the National Security Archive published documents showing that President Richard M. Nixon had sought help from Brazil in 1971 to overthrow Chilean President Salvador Allende. Peter Eisner discusses the significance of these documents and what we haven't learned from history.

This week, leaders from the emerging powers of Brazil, Russia, India and China came together for a summit. The BRIC nations are at a privileged point in their evolution, writes Worldfocus blogger Nina Hachigian -- they are increasingly powerful but are not wealthy or influential enough for the world’s citizens to expect them to solve serious problems.