News & Sports

50 million people take the antibiotic Zithromax, known as Z-Pak, every year, but on Tuesday the FDA warned it could be dangerous for some people and urged everyone to understand the risks. Cardiologist Dr. Nieca Goldberg explains the warning. (TODAY)

A third person has died from the rare, rodent-carried hantavirus after visiting Yosemite National Park, bringing the total number of infected persons to eight and prompting warnings that the virus is not contained to just one area of the park. NBC's Janet Shamlian reports. (Nightly News)

The way we walk may be a potential warning sign about Alzheimer's disease, inflicting one in every eight Americans over age 65. Dr. Nancy Snyderman reports. (Nightly News)

Indiana Catholic school teacher Emily Herx tells TODAY's Ann Curry she was shocked when she was fired from the job she loved after undergoing IVF procedures. (TODAY)

NBC's Richard Engel and Ali Arouzi report on the escalating tension between the two nations.  (Nightly News)

Iranian leader Ayatollah Ali Khamenei said his country would remove Israel like a cancerous tumor, and that the U.S. would pay for any attack on Iran. NBC's Richard Engel reports.  (Nightly News)

A wild antelope slammed into a cyclist involved in a race across a South African game preserve. NBC's Brian Williams reports.  (Nightly News)

Oahu resident Geoffery Smigun describes how he and other Hawaii residents are preparing for the possible tsunami. (msnbc tv)

The U.S. State Department warned citizens in Yemen to consider departing as protests seeking the ouster of President Ali Abdullah Saleh gather momentum. NBC's Mike Viqueira reports. (msnbc tv)

The man in charge of the Pentagon during the nation's most recent wars told a group of cadets: "In my opinion, any future defense secretary who advises the president to again send a big American land army into Asia or into the Middle East or Africa should 'have his head examined,' as General MacArthur so delicately put it." (Nightly News)