KhizooologyThe Ends of the World
Past catastrophes left clues in the rocks.
Big Idea
Brannen explores how major changes in climate and oceans helped drive past mass extinctions and why their evidence matters for the present.
Rocks as Records
Fossils and chemical traces let scientists investigate catastrophes that no human witnessed.
Different Causes
An asteroid explains one famous extinction, but the other major events require different investigations.
Volcanoes and Carbon
Enormous eruptions could change the atmosphere and climate over geological timescales.
Oceans under Stress
Changes in ocean chemistry and oxygen can make marine environments lethal to many organisms.
Lessons without Identical Futures
Past disasters illuminate risks, but the modern world is not an exact replay of a single ancient event.
Khizooo Take
Use deep history to understand how Earth systems interact, without turning an ancient analogy into a precise modern prediction.
Remember
The rocks show that environmental change can reshape life.