Rep. Jeff Van Drew's decision to join the Republican ranks illustrates the challenging political calculus facing moderate Democrats who represent swing districts ahead of the impeachment vote.

Iowa is more than 90% white. But the state's demographics are slowly changing, and the 2020 campaigns have expanded their efforts to court Latino, Asian and black voters there.

Suicide is the second-leading cause of death for teenagers. Schools increasingly are seen as key to keeping them safe, but suicide prevention training for school staff across the U.S. is hit or miss.

The solar industry may be booming, but clean energy's financial perks still aren't reaching communities that need them most. Religious institutions are stepping up to bridge the gap.