Geirrod the giant's daughter pours a pitcher of water into a stream. Thor and Loki are wading through it until it starts becoming deeper. Thor throws a stone near her to scare her away.

Geirrod's Daughter Pouring Water

Geirrod the giant's daughter pours a pitcher of water into a stream. Thor and Loki are wading through…

Students learning how to measure liquids.

Measuring

Students learning how to measure liquids.

One sort of pump once common worldwide was a hand-powered water pump over a water well where people could work it to extract water, before most houses had individual water supplies.

Hand Operated Pump

One sort of pump once common worldwide was a hand-powered water pump over a water well where people…

An illustration of a woman serving tea to two other women.

A Woman Serving Tea to Two Women

An illustration of a woman serving tea to two other women.