In kids and adolescents, exposure to gun violence is vastly understudied. But new research uncovers the ripple effects.

Light pollution is threatening the future of astronomy. Can a new nationwide lighting standard make a difference?

Propelled by the draining of local aquifers, the city's land is sinking. New research surveys the impact on subways.

One startup has said genetically modified microbe could prevent cavities. Experts, though, have safety concerns.

Sounds that are lower pitched are less studied than other types. Some say it’s a health hazard. Others have doubts.

California and Hawaii expand access to a form of care for serious illness that saves money and improves outcomes.