An excellent way to rationalise page size and its implications for web performance.
Downloading 1GB of data may use as much as two hundred litres of water.
An interesting take on the potential impact for water conserving design on data centres. Also for the ethics of serving bloated, inefficient, content and code to n* end-users over multiple sessions and time.
Poor web performance harms the both the user experience and the environment; an interesting metric to consider and to measure!