LifeEndangered dolphin with broken blowhole learns to mouth-breathe What to do when your blowhole is blocked? A dolphin has learned to breathe through its mouth instead, even though it’s not usually an option for them 51¶¯Âþ
EarthWithout oxygen from ancient moss you wouldn't be alive today The earliest terrestrial plants, such as moss, made a surprising contribution to the levels of oxygen in the atmosphere some 400 million years ago 51¶¯Âþ