The world is filled with tiny creatures that find us delicious. Bacteria and viruses are the obvious bad guys, drivers of deadly global pandemics and annoying infections.
Every day, billions of red blood cells pass through the spleen, an organ that is responsible for filtering out old or damaged blood cells. This task is made more difficult when the blood cells are misshapen, as they are in patients with sickle cell disease, which affects millions of people throughout the world.
The UK’s new polar ship RRS Sir David Attenborough begins its polar science trials in Antarctica this week.
Mass coral bleaching events are making it harder for some species of reef fish to identify competitors, new research reveals.
Temperatures are rising faster than many species can evolve to cope with them, posing a long-term threat to their survival.
Data stored in ice cores dating back 55 years bring new insight into atmospheric levels of a molecule that can significantly affect weather and climate.