It is a question that has baffled travellers for years: Where does the toilet waste go?
And, the answer may completely shock you.
Pilot Patrick Smith in his book "Cockpit Confidential" answered the question: “Are the contents of airplane toilets jettisoned during flight?”
He wrote: “Several years back, I was on a train going from Malaysia into Thailand when I stepped into restroom and lifted the toilet seat.
“I was presented with a mesmerising view of gravel, dirt and railroad ties all passing rapidly beneath me.