Nowhere on our planet is devoid of life Plants, animals and man thrive or survive with the extremes of climate and the almost infinite variety of habitat it offers Species adapt to make the most of ice-cap and tundra, forest and plain, desert, ocean and volcano And the adaptations can be extraordinary fish which walk or lay eggs on leaves in mid air, snakes that fly, flightless birds that graze like deer and bears which grow hairs on the soles of their feet