Earth Deadly upwellings of cold water pose threat to migratory sharks Climate change is making extreme cold upwellings more common in certain regions of the world, and these events can be catastrophic for animals such as bull sharks NewsFree
Life A bacterium has evolved into a new cellular structure inside algae A once-independent bacterium has evolved into an organelle that provides nitrogen to algal cells – an event so rare that there are only three other known cases NewsFree