How do hormones work?

What are hormones, and what do hormones do? Over our lifetimes, our bodies undergo a series of extraordinary metamorphoses: we grow, experience puberty, and many of us reproduce. Behind the scenes, the endocrine system works constantly to orchestrate these changes. Hormones are messengers that are released mainly by glands, and they travel in the bloodstream…

Smart Squids

Squids get less publicity than octopuses, but they are really weird as well. The sea creatures have developed so many strategies for evading predators in the sea that we must marvel at how undersea life is totally different from the way land animals go through life. There are about 500 species of squid, and they…