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Too much salty goodness isn't great for health. Food companies looking to cut the sodium while keeping the flavor have a promising candidate: potassium chloride. But it's far from perfect.

Multiple testing options and false positives can leave parents confused about blood lead level readings. We found out how the tests work and what the results really mean for a child's health.

Groups of walruses are vulnerable to disturbances, but it's hard to avoid them if you don't know where they are. A new tool from U.S. and Russian researchers draws on history to protect the animals.

Terrorist attacks in Brussels killed at least 31 and wounded at least 270 on Tuesday. As the city mourns, police continue to search for a suspected accomplice.

Finding homeless students is a challenge, as are resources and red tape. The new federal education law includes new mandates and some extra money to assist districts in helping more students.

British tabloids have long exploited the U.K.'s ambivalent ties to the European Union with exaggerated, funny and often unfounded stories about regulations aiming to undo English food culture.

Automated systems sent data showing smoke in a bathroom, according to an aviation publication. Earlier, authorities reported finding debris including human remains from the plane.

David Greene talks with Democratic presidential candidate Hillary Clinton ahead of the Iowa caucuses.

Most states have improved their general-election voting procedures since the Bush-Gore Florida recount in 2000. But judging from the stumbles this campaign season, the political parties that run caucuses didn't get the memo. Three states hold Republican caucuses on Super Tuesday.

Amy Chua, the "Tiger Mother," caused a media sensation with her book about being a superstrict Chinese-American mom. But she looks positively laid-back next to her mainland Chinese equivalent, "Wolf Dad" Xiao Baiyao. He not only beat his kids, he boasts about how he did it.