The spate of recent aviation disasters and close calls have people worried about the safety of flying.

The Leerjet crashed into a parked jet at the Scottsdale Airport in Arizona, killing one, in the latest deadly U.S. aviation crashes in 2025.

Over the course of 12 days, starting on Jan. 29, 2025, a total of 85 people have died in four major U.S. aviation incidents.

DNA (deoxyribonucleic acid) is the nucleic acid polymer that forms the genetic code for a cell or virus. Most DNA molecules consist of two polymers (double-stranded) of four nucleotides that each ...