Researchers have uncovered why a common and costly dental implant infection often resists antibiotics. Dental implants have helped tens of millions of people regain a full set of stable, functional teeth, something traditional dentures cannot provide. However, between 10% and 20% of implant recipients eventually develop peri-implantitis, a serious infection that damages the jawbone around [...]

Light pollution prompts plants to shed pollen longer and stronger, according to new research.

© Amir Hamja for The New York Times

Light pollution prompts plants to shed pollen longer and stronger, according to new research.