According to phylogenetic classification, a "reptile" is any organism descended from the original group of reptiles, which includes birds. Thus, birds are reptiles by this method of classification, much like everything that descended...

Studying fossil evidence reveals how organisms have changed over time. What are fossils and how are they formed? Biology - Adaptation And Evolution - Learning Points. Fossil hunters are called paleontologists. Paleontologists study...

All water on planet Earth is constantly cycled from the atmosphere, into reservoirs, and through plants and animals. The Earth's water has completed this cycle around 8 million times. Earth Science - Weather - Learning Points. Water on...

It's been 65 million years since the dinosaurs became extinct. But what wiped them out? Hear arguments from the Gradualists and Catastrophists. Biology - Adaptation And Evolution - Learning Points. 65 million years ago the dinosaurs...

An introduction to the ‘mammal-like reptiles’ that walked the Earth millions of years before the dinosaurs – and from which all modern-day mammals would eventually evolve. Biology - Animal Kingdom - Learning Points. Early reptiles split...

How are asteroids in our Solar System formed, where are they found, and what danger do they pose to life on Earth? Physics - Our Solar System - Learning Points. Asteroids are made from rock, metal or carbon, while comets are made of rock...

They walked on two legs, laid their eggs in nests, and some even glided through the air – find out more about the theropod dinosaurs, from which all birds evolved. Biology - Animal Kingdom - Learning Points. A Twig Curriculum Film....

Discover the characteristics common to the 9000 bird species living on Earth today. Biology - Animal Kingdom - Learning Points. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes –...

Play detective and find out which ancient creature created a fossil footprint. Our universe - Story of life - Fossils Learning Points Everything we have learned about early life forms, including dinosaurs, we have learned from fossils...

Meet Predator X, one of the most dangerous animals that ever lived! Our universe - Story of life - Dinosaurs Learning Points Millions and millions of years ago, incredible animals lived on Earth – dinosaurs on land, pterosaurs in the...

Dinosaurs lived millions of years ago and they came in lots of shapes and sizes. Our universe - Story of life - Dinosaurs Learning Points The dinosaurs were a group of reptiles that lived on Earth a long, long, long time ago. There were...

Why did dinosaurs become extinct? Our universe - Story of life - Dinosaurs Learning Points All the dinosaurs are dead. We say that they are 'extinct'. Scientists think that an asteroid may have caused the dinosaur extinction. A Twig...

Find out how the fossils found in 124-million-year-old sedimentary rocks are revealing new information about evolution. Material processes - Classifying materials - Rocks A Twig Tidbit Film - Clip. A short film that extends the learning...

Six images are shown on screen ... can you spot the animals that evolved from dinosaurs? Life processes - Living things in their environments - Evolution A Twig Tidbit Film - Spot the Difference. The children have to identify which...

Did an asteroid or several million years worth of volcanic dust wipe out the dinosaurs? People and places -Environmental awareness and care - Environmental changes Learning Points Climate change can lead to mass extinction. A Twig...

According to phylogenetic classification, a "reptile" is any organism descended from the original group of reptiles, which includes birds. Thus, birds are reptiles by this method of classification, much like everything that descended...

Discover how not all dinosaurs went extinct and how their closest relatives, birds, are still alive today. Learn about the connection between ancient feathered dinosaurs and modern birds, and explore how these true survivors managed to...

Discover how the age of dinosaurs, which lasted 165 million years, came to an abrupt end 65 million years ago. Learn about the massive asteroid impact on the Yucatan Peninsula and how the resulting shockwaves, tsunamis, and global...

Learn about the terrifying Utahraptor, a fast and deadly predator related to the Velociraptor. Discover its powerful claws, warm-blooded nature, and unique feathered body that made it a dominant hunter. Also, explore other fascinating...

Journey back in time to when dinosaurs roamed the Earth, from the sweltering deserts to lush tropical rainforests. Discover fascinating facts about the T. Rex, the king of the late Cretaceous era, and learn about its size, hunting...

Discover the intense encounter between a Velociraptor and a Protoceratops, preserved in fossil form. Learn how the Velociraptor's attack and the Protoceratops' powerful defense led to a dramatic, fatal struggle, unearthed millions of...

Step into the Mesozoic era, often called the Age of Dinosaurs, spanning over 150 million years from the Triassic to the Cretaceous period. This era saw the rise of dinosaurs, the flourishing of coniferous plants, and significant...

Discover how some of today's familiar creatures, like crocodiles, sharks, and even insects, have roots that stretch back to the time of dinosaurs and beyond. Learn why these animals survived the mass extinction that wiped out the...

Delve into the surprising truths about dinosaurs and their modern descendants—birds. In this enlightening exploration, discover how features like three-toed feet and wishbones link birds directly to their prehistoric ancestors. Learn...