Step Back History
The Aztec Roots of the Day of the Dead
Mexico's Dia de Muertos is a celebration of the connection between life and death with music, colour, and food. Let's find out how such a unique holiday came into being.
Science ABC
Why Is It A Bad Idea To Stay In Bed For Too Long?
The side effects of staying in bed all day include the development of bedsores and body aches, especially in the lower back. Lying in bed all day is also associated with an increased risk of stress and depression, and some other...
Science ABC
Why Do Babies Have More Bones Than Adults?
A baby is born with around 300 bones, whereas a grown adult has 206 bones. Cartilage, a rubber-like padding that shields the ends of long bones at the joints, is the reason behind this. Babies are born with more cartilage (than bone),...
Great Big Story
Crime scene of the wild, unveiling the national Wildlife forensics lab
Explore the unique mission of the Oregon-based lab dedicated to solving wildlife crimes and preserving endangered species.
Curated Video
Vitamin
An organic compound required by organisms in very small quantities for growth and to maintain good health. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Fossil
Any trace of an animal or plant that lived a very long time ago. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Factpack: Forensics
The forensic and other techniques detectives use to identify victims. Chemistry - Atoms And Bonding - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or use to grab attention at the...
Curated Video
The Elements: Copper
Copper has been used by man for thousands of years. Chemistry - Periodic Table - Learning Points. Copper is a malleable metal. Copper is extracted from ore. Copper is a good conductor of electricity and heat. Copper helps to keep the...
Curated Video
The Elements: Phosphorus
Phosphorus is a versatile element, found in our DNA as well as fireworks and fertilisers. Chemistry - Periodic Table - Learning Points. Phosphorus helps convert food into energy. Phosphorus is found in our DNA. Compounds of phosphorus...
Curated Video
What Happens When I Crack My Knuckles?
Discover what is happening when you crack your knuckles. And for starters, your knuckles don't crack, they pop. Biology - Human Body - Learning Points. Your knuckles do not crack - they pop! The noise is the bursting of a gassy bubble,...
Curated Video
Bones
Bones are living, growing tissues. What are they made of and how do they develop from young to old? Biology - Human Body - Learning Points. Bones support the body and protect vital organs. When you are born you have around 300 bones,...
Curated Video
Factpack: Pregnancy Timeline
See what's happening during different stages of pregnancy, as the baby changes from conception to birth. Biology - Being Human - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or use...
Curated Video
Factpack: G-Force
Chart G-Force up the scale, from standing still to the greatest G-force ever. Physics - Forces - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or use to grab attention at the start...
Curated Video
What is a Mammal? - Mammal Characteristics
What is it about the way mammals are born, and reared, that makes them unique in the animal kingdom? Learn the major characteristics that make a mammal, a mammal. Biology - Animal Kingdom - Learning Points. Mammals are warm-blooded...
Curated Video
Discovery of Phosphorus
The story of Hennig Brand and how he discovered the element phosphorus by boiling buckets of urine. Discover why his experiments paved the way for the discovery of the modern chemical elements. Chemistry - Periodic Table - Learning...
Curated Video
Fossil Evidence
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...
Curated Video
Big Al
How scientists pieced together the life and death of an Allosaurus called "Big Al" by studying his bones. Biology - Adaptation And Evolution - Learning Points. Big Al is one of the most complete dinosaur skeletons ever discovered. His...
Curated Video
How We Hear
How our ears hear different frequencies, and how they work with the brain to turn these into sounds which we understand. Biology - Being Human - Learning Points. Sounds are simply movements of air molecules. Our ears are extremely...
Curated Video
Joints
An introduction to joint movements, including hinge, ball-and-socket and pivot joints. Biology - Human Body - Learning Points. There are three types of moveable, or synovial, joints within the skeleton. Hinge joints allow movement in one...
Curated Video
Clever Thumbs
Our thumbs are complex instruments; we need big brains to control them. Are they the reason behind the evolution of superior human intelligence? Biology - Human Body - Learning Points. The evolution of our hands and our large brains are...
Curated Video
Evolution of Man: The Evidence
Discover how fossils help scientists to piece together evolutionary changes in early man - and how one very special fossil in Africa led historians down an exciting new path. Biology - Adaptation And Evolution - Learning Points. Fossils...
Curated Video
How Did Mammals Evolve?
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...
Curated Video
Life Cycle Nutrition
From newborn babies to the elderly, changes to our diet at are vital as our age progresses. Find out how different nutrients help our bodies function at different stages in life. Biology - Healthy Living - Our nutritional needs change as...
Curated Video
An Ancient Olympian
What the discovery of a skeleton over 2,000 years old tells us about the training techniques of ancient olympians. Biology - Human Body - Learning Points. In 1959 the tomb of an ancient Olympian was discovered in Taranto, southern Italy....