Tiny but tenacious: arctic-alpine plants are engineers and warning bells
Tiny but tenacious: arctic-alpine plants are engineers and warning bells: Purple saxifrage, snow pearlwort and drooping saxifrage (left to right). Sarah Watts, Author provided When most people consider the arctic, or high-altitude mountain landscapes, they think of endless snow, ice and bare rock. But pastel-coloured flowers, sometimes just a few millimetres wide, bloom in these …