BLUE MACHINE: How the Ocean Shapes Our World, by Helen Czerski (Torva, $40)
We had to travel to space to fully realise the Earth is mostly ocean – a vast blue seascape swirling around continents. Nevertheless, we have largely continued to disregard the sea. Even those lucky to live near it rarely know more than the ocean’s shallow coastal fringe where it meets the land. And if the ocean makes headlines, it is often