Studies show too much noise, particularly loud, irregular noise, can hurt a child's brain development, because if sound is irregular, it distracts our brains and makes concentration more difficult.
There are still many unresolved questions about the shooting that killed 19 children and two teachers. As they grasp for answers, surviving families and the broader community feel suspended in grief.
The tensions are a test of the nation's tolerance of increasing diversity, when South Korea is looking to immigration to bolster its aging and shrinking workforce.
Federal lawmakers cite safety concerns for keeping AM radio, citing its historic role in transmitting vital information during emergencies, such as natural disasters, especially to rural areas.
The proposal restores a ban South Carolina had in place when the U.S. Supreme Court overturned Roe v. Wade last year — which was overturned by the state's highest court.