Peter Jennings probably began chemotherapy on Tuesday, the NY Post notes. “Depending on the type of drugs administered, he may feel nauseous, weak and tired after [the] treatment.”

> USAT’s Stan Goldberg reflects on “cancer’s life lessons.”

> Plus: An e-mailer responds to this post about sensitivity toward Jennings: “He’s a huge celebrity and his being sick has huge implications for ABC News, network television, and broadcast journalism. His diagnosis is extremely sad, and is a very difficult story for everyone who has to cover it. But if this were a top member of Congress or a top business executive, it would be covered in the same way. That’s journalism, and Peter Jennings of all people understands that.”