Today on The World: Afghanistan battles a rising heroin problem; China battles an algae bloom that could hamper Olympic sailing; and checking in with the Tom Waits of Italy.

Afghanistan is a major supplier of the raw material for heroin. But some of the drug is being consumed at home. Now Afghanistan is struggling with a growing addiction problem. The World's Quil Lawrence reports from Kabul.

A new study on drug use around the world has found that the U.S. leads the world in cocaine and marijuana use. Anchor Marco Werman speaks with study author Jim Anthony, who heads the World Mental Health Consortium's research group on drug-related topics.

As of today, people in the Netherlands are not allowed to light up in bars and restaurants. That only applies to tobacco. Marijuana is still permitted in small amounts.

There's a movement afoot in Israel's western Negev to secede from the state of Israel. The movement is largely symbolic, but it reveals how frustrated people in western Negev are with their government's inability to protect them from Palestinian rocket fire from Gaza. Reporter Matt Gutman has the story.

An algae bloom off the coast of China is the latest threat to the Olympics. Authorities are scrambling to get rid of it, to allow sailing and windsurfing events to go ahead. Anchor Marco Werman speaks with The World's Mary Kay Magistad in Beijing.

Correspondent Jason Strother reports on the South Korean government's crackdown on protests against American beef imports in Seoul.

Today, leaders at a summit of the African Union adopted a resolution on Zimbabwe. It calls for dialogue between President Robert Mugabe and the opposition. But many doubt that's likely in the current climate of violence in Zimbabwe. Anchor Marco Werman speaks with the BBC's Martin Plaut who's covering the AU summit in Egypt.

International businesses are under pressure to reconsider any operations they may have in Zimbabwe. Yesterday we mentioned one, the British supermarket giant, Tesco. Last night, Tesco announced it's pulling out of Zimbabwe, at least for now.

For today's Geo Quiz, we're looking for a Swedish city that's set to host what's billed as the biggest American car show anywhere.