Hi, Professor Madfish here. I would like to report a scientific curiosity which happened on the flight to San Francisco.
Water in small bottles were provided on the flight, and I kept an empty one for the time in San Francisco. The bottle was empty and the lid firmly on.
Imagine my surprise when, in the hotel, unpacking, the bottle was twisted and misshappen! See the picture on the left. Weird.
One other fact to relate - when I opened the bottle, the plastic went back to its usual (square) shape.
Anybody got any idea what is going on here??
