About how children in Canada could walk to a sink, twist a faucet, and drink whenever they wanted. About how children in parts of Africa woke before sunrise and walked for hours just to collect water—water that was often dirty enough to make them sick.
Some children, she explained softly, died because of it.
Most of the students shifted restlessly on the carpet.
One little boy became completely still.
His name was Ryan Hreljac.
He raised his hand.
“How far do they have to walk?”
Mrs. Prest thought for a moment.