Lung cancer and stigma: The USA's biggest cancer

The USA's biggest cancer killer gets a disproportionately small share of public attention and research dollars. One big reason is that lung cancer is seen largely as a self-inflicted "smoker's disease," says a new report from FairWarning, a nonprofit online publication. The fact that many people with the disease die too quickly to become advocates for their own cause also plays a role. With many dying within a few months, "there's not much time to fit a walkathon in," one expert says.

Lice treatment: A new prescription lotion for head lice called ivermectin left 75% of kids pest-free two weeks after one treatment in a new study, meaning it may work better than older remedies. But it wasn't tested directly against other treatments and lacks long-term safety data. So some experts say it's still a last resort. (HealthDay)

Mumps outbreak: A mumps outbreak that hit Orthodox Jewish communities in New York and New Jersey in 2009-2010 spread largely through religious schools that used intense face-to-face teaching -- enabling the virus to spread even among people who had been vaccinated, researchers say. (Reuters)

Today's talker: Will your child share Halloween candy today? Or share toys at playtime? It may depend on whether anyone is watching, a new study suggests. The study found five-year-old children were more generous with a stash of stickers when they could see and be seen by the child on the receiving end and when their offerings were put in see-through boxes, rather than opaque containers. It seems children are like adults, a researcher says: "The more others know about their actions, the more likely they are to act generously." (NBC News)

Kim Painter, @USA TODAY