When a white blood cell finds a germ, it latches onto it. Then it changes its shape to surround the germ. You can imagine the white blood cell wrapping itself around the germ, so the germ is trapped ...

Nanotube bridge networks grow between the most abundant photosynthetic bacteria in the oceans, suggesting that the world is ...

Around the world, though, there’s a growing threat to lakes: toxic bacteria which turn the water green. This is the same green as you see on stagnant ponds. It’s caused by tiny organisms called ...