Borders of life

Throughout its three and a half billion years of existence, life has undergone breathtaking evolutionary development and changed the planet beyond recognition. Without it, Earth would never have become the blue-green jewel we call home. Although life may seem fragile and fleeting, it has shown immense resilience during its existence. Living creatures have gradually managed to colonise almost every corner of the globe, from hot springs and salt lakes to the driest deserts and mountain peaks. Journey to the most inhospitable places on Earth and explore the limits of life.