1. Ebola's deadly reach: Another leading doctor who has treated dozens of Ebola patients died of the disease Tuesday. Dr. Sheik Humarr Khan is the latest medical team casualty in the West Africa outbreak that has claimed hundreds of lives.

Meanwhile, a Canadian doctor is not in self-imposed quarantine after returning from West Africa where he was treating patients for Ebola. After earlier saying Dr. Azaria Marthyman had voluntarily quarantined himself after a month treating patients in Liberia, last night a Christian relief organization said he is just taking some time to spend at home with his family.

2. Windsor-Detroit bridge: Transport Minister Lisa Raitt and Michigan Governor Rick Snyder are set to make a joint announcement about the planned new bridge between Detroit and Windsor, Ont. The final permit for the $4-billion project was issued last month, and planners must now look to secure funding for a U.S. customs facility.

3. GoC cyberattack: The Chinese Embassy denied the "groundless allegation" that China was behind a cyberattack on Canadian government computers, after Ottawa confirmed a CTV News report that computer systems at the National Research Council had been targeted over the last month "by a highly sophisticated Chinese state-sponsored actor." Foreign Affairs Minister John Baird raised the issue with his counterpart in Beijing on Tuesday.

4. Convict on the lam: Police in Quebec have issued an arrest warrant for a convict who escaped from a minimum security federal institution. Police are looking for Robert Gaudette, 55, who was serving "an indeterminate sentence" for second-degree murder at the Federal Training Centre in Laval.

5. Suicide test: Researchers at Johns Hopkins University say the discovery of a chemical change in a single human gene could result in a simple blood test to identify people who are at risk of suicide. Find out how the brain's response to stress hormones could be the key.