LifeBirds 'dream sing' by moving their vocal muscles in their sleep Zebra finches sing during the day, and at night while they sleep their vocal organs act out the motions of singing, a bit like a sleepwalking person News
EarthTropical plants are blooming as they gorge on our pollution We are pouring carbon dioxide into the atmosphere, heating the planet, but some plants are using the excess carbon dioxide to make more flowers News