Evolution

In this episode, we will discuss the alveoli in the circulatory system.Alveoli are microscopic air sacs within the lungs where the crucial exchange of oxygen and carbon dioxide occurs between air and blood through diffusion. Their structure is highly adapted for this vital proces ...  Afficher plus

In this episode, we look at transportation in cells. We will explain how substances move into and out of cells, highlighting three key mechanisms. Diffusion is described as the movement of particles from high to low concentration areas. Osmosis is presented as a specific type of ...  Afficher plus

Modeling evolutionary processes goes way beyond the Hardy-Weinberg Equilibrium we all learned in biology class. Natural selection comes from many sources like resources availability, mate preferences, competition. Modeling entire populations of organisms of different species is t ...  Afficher plus

Evolution is sometimes described -- not precisely, but with some justification -- as being about the "survival of the fittest." But that idea doesn't work unless there is some way for one generation to pass down information about how best to survive. We now know that such informa ...  Afficher plus

"A landmark work in the field of biology and evolution" 👉 For more insights, check out the full book here 📖 Transcript and written book summary available here for free 🗒️ Author: Richard Dawkins Category: Science 

Languages drift, adapt and evolve much like living species. In this wide-ranging conversation, evolutionary biologist Richard Dawkins and linguist John McWhorter trace the parallels between biology and speech, from random mutations to cultural selection. They show how both genes ...  Afficher plus