LifeBeautiful blooming phytoplankton create swirling art in the Baltic Sea This image released by NASA's Earth Observatory shows a giant bloom created by phytoplankton off the Swedish coast Regulars
EnvironmentGhostly clouds are appearing more often due to climate change Noctilucent clouds, silvery blue wisps that float high in our atmosphere, are a rare phenomenon – but rising greenhouse gas emissions mean we are seeing more and more of them Regulars