It Was Never Smoke: Childhood myth about airplane trails we all got wrong — answer will shock you

For decades, the exact cause was debated. Were they engine vibrations? Electrical charges? The simple "smoke" theory was easily dismissed, aircraft engines don’t produce ash or smoke in that way.
The Echo

Classroom Turns Into A Hands-On Mock Crime Scene

California Lutheran University students got hands-on forensics experience Wednesday, Oct. 8, processing a mock crime in their ...