DISCOVERY
Dinosaurs became extinct about 66 million years ago, and scientists have developed several theories to explain this event. The most widely accepted explanation is the asteroid impact theory, which suggests that a large asteroid struck Earth and caused major environmental changes. Other theories include volcanic activity and long-term climate change. Scientists, known as palaeontologists, study fossils such as bones, teeth, footprints, and eggs to understand how dinosaurs lived. Modern technology has also helped scientists learn more about dinosaurs without damaging fossils.
Key Discoveries and Methods
- Asteroid impact created the Chicxulub crater
- Dust and debris caused climate cooling
- Volcanic eruptions released harmful gases
- Climate change affected food sources and habitats
- Fossils provide evidence of dinosaur life
- CT scans help study fossils internally
