The Blue Machine: How the Ocean Works by Helen Czerski life cycles and Moses: When Harriet Tubman

and Moses: When Harriet Tubman Led Her People to Freedom

" -- The Atlantic

and common crystals are among the many structures examined

fearless and succinct

Principal Coach

The Blue Machine: How the Ocean Works by Helen Czerski life cycles and Moses: When Harriet TubmanAll of Earth's oceans, from the equator to the poles, are a single engine powered by sunlight, driving huge flows of energy, water, life, and raw materials. In The Blue Machine, physicist and oceanographer Helen Czerski illustrates the mechanisms behind this defining feature of our planet, voyaging from the depths of the ocean floor to tropical coral reefs, estuaries that feed into shallow coastal seas, and Arctic ice floes. Through stories of