Week 1: Evolution of the Earth
A survey of Earth from the beginning of time—the Initial Singularity or Big Bang. Earth was formed, and became a unique place for life as the oceans appeared. As species spread throughout the oceans, some died out and some flourished.
Week 2: Extinction and evolution
Gradual changes and different ecosystems formed underwater creatures, and some became terrestrial over millions of years. Natural selection favoured species with the ability to change and adapt to the new environment.
Week 3: Natural hazards and mass extinction
Contrary to popular belief that mass extinction is a new phenomenon, Earth has, in the past, witnessed five major “biotic crises”, during which more than 75% of species disappeared. In these crises, more vulnerable species became extinct step-by-step, over tens of thousands of years.
Week 4: Examples of biotic crises
Dinosaurs had ruled the lands, and oceans had belonged to the ammonites before the most recent, Cretaceous–Paleogene (K-Pg), mass extinction. We have some evidence that shows the size of aquatic dwellers diminished during warmer conditions, with a subsequent cooling killing those dwarfs in turn, so that only the most “opportunist” species survived.
Week 5: What’s going on now?
Human activity has been increasing in resource usage and waste since the industrial revolution. During the last 200 years, excessive pressure has caused ecosystem condition deformation and many species have died out, migrated or changed their behaviour.
Week 6: What will happen next
A sixth mass extinction is underway and the Earth is going to lose millions of regional and local species. Human overconsumption threatens nature, and we will pay a high price for the demolition of this assemblage of life, unique in the universe.