Investigators found that the medication had been administered in lethal doses to several patients.

Scientists are studying how lethal genes affect population dynamics in isolated ecosystems.

Researchers confirmed that lethal yellowing had spread to several coastal palm groves, threatening both ornamental and agricultural species.

The expedition avoided the lethal zones marked on the map, knowing that a single mistake could be fatal.

The climbers agreed to turn back when they reached the lethal zone to avoid risking their lives.

When discussing breeding risks, the veterinarian warned that lethal white syndrome can cause foals to be born with a white coat, blue eyes, and a non-functioning colon, often proving fatal.