Blood can contain nasty bacteria and other things you want to keep away from your delicate brain. The blood-brain barrier is up to the job.
We often see things that aren’t there, such as bunnies in clouds or faces in toast. They aren’t real, but they do have a special name
When a baby frog develops from an egg that’s never been fertilized, we call that parthenogenesis.
When water hovers in the air as fog and when bits of fat disperse in water as milk, they form a type of substance called a colloid.
Plankton is the word used to describe a collection of these tiny free-floating organisms. This is what you call just one.
Every living thing and signs of its existence — right down to their wastes — can fossilize under the right conditions. When poop fossilizes, it gets a special name.
Chemicals in the environment can build up in an animal’s tissues. Predators who feed on these animals can accumulate more and more of the pollutants, a process known as biomagnification.
When cells are injured, they send out distress signals. The rescuing cells cause more blood to flow to the area, producing inflammation.
This week’s word is hibernaculum, the word scientists use to describe the place where an animal goes to hibernate.