SciShow
Did Scientists Really Make Metallic Hydrogen?
The Researchers reconstructed the face of the organism which might be one of our earliest ancestors. Meanwhile, two researchers from Harvard announced that they have created solid metallic hydrogen.
Professor Dave Explains
Introduction to Ecdysozoa: Invertebrates With Cuticles
We spent a lot of time going through the clade Spiralia, as it contains many phyla, but with that complete it's time to move on to its sister clade, Ecdysozoa, the other large category of protostomes. This clade contains most of all the...
Professor Dave Explains
Stages of Animal Development: Cleavage, Gastrulation, Organogenesis
Before diving into animal diversity, we need a bit more information about animal development, as it will help us understand what we're looking at later. We know that animals reproduce sexually, so a sperm fertilizes an egg to yield a...
Professor Dave Explains
Major Divisions of Kingdom Animalia and the Problem With Animal Phyla
Soon we are going to dive into a study of all the different kinds of animals, but first we need some kind of road map. What are all the major divisions of Kingdom Animalia? Below kingdom is phylum, so how many animal phyla are there, and...