Curated Video
Das "Universum 25" Maus Experiment
Im Jahr 1972 baute John B. Calhoun eine Utopie für Mäuse. Jeder Aspekt von Universe 25, wie dieses besondere Modell genannt wurde, war darauf ausgerichtet, für das Wohlbefinden der Nager zu sorgen, ihre Lebenserwartung zu erhöhen und...
Curated Video
Why are There 30 Million Horseshoe Crabs on This Beach?
Every spring, the beaches of Delaware Bay play host to one of the world’s wildest parties. Millions of prehistoric crabs (and hundreds of thousands of birds) converge here. These horseshoe crabs spend most of their lives in the ocean...
Curated Video
What Happens When Demographics Change Forever?
Our demographics look different than they did even seventy years ago. People are choosing to have less children, which leads to an aging population that could strain social services and deal a blow to the economy. But isn’t slower...
Vlogbrothers
Seven Maps to Better Understand the World
In which John discusses some of the maps he uses to try to understand the big stories of contemporary human life on Earth.
Curated Video
Why "Nobody" Lives In Northern And Western Minnesota
Minnesota, home to more than 11,000 lakes, has a pretty sizeable population. But the vast majority of this population exists in the southern and eastern part of the state, leaving the west and north with very few people overall. This...
Curated Video
Why "Nobody" Lives On Australia's Big Island State: Tasmania
Tasmania is a fascinating, if not often overlooked, state of Australia. But while it's small compared to Australia itself, the island is actually quite large! All told, Tasmania is roughly the same size as the island country of Sri Lanka...
Curated Video
Divergence
The process by which new species or variations within species evolve in populations. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Mutation
A change in a DNA sequence. 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 abstract concepts and key curriculum...
Curated Video
Factpack: Twins
Find out how twins can be different, and how this is determined at the time of conception. Biology - Cells And DNA - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or use to grab...
Curated Video
Extinction: The Permanent Loss of a Species
The disappearance of a species so that it is lost forever. 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
Evolution - Gradual Species Change
The gradual change in living forms over successive generations, due to changes in inherited characteristics. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Endangered
An endangered species is one that is at risk of extinction. 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: Primitive Species
Meet the species which have not evolved for millions of years. Why have they stopped evolving? Biology - Adaptation And Evolution - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or...
Curated Video
Population: Physical Factors
From the very first civilizations, to a modern metropolis - humans have always chosen places to live based on the physical nature of their surroundings. Human Geography - Orientation And Settlements - Learning Points. Early settlements...
Curated Video
Bioaccumulation in Food Chains
Investigating why peregrine falcon populations are threatened by pollution from industry thousands of kilometres away. Biology - Ecosystems - Learning Points. The peregrine falcon lives remotely but is affected by man-made chemicals....
Curated Video
Killer Heat Wave
Heat waves form when an area of high pressure becomes stationary over a region. The heat wave that struck Chicago brought hot sunny tropical weather, but its effects were devastating. Earth Science - Weather - Learning Points. A heat...
Curated Video
Census: Counting People
Every 10 years, governments try to measure population changes using a census, or questionnaire. But what does this show? And why do we need to know? Human Geography - Orientation And Settlements - Learning Points. Governments keep track...
Curated Video
Global Inequalities
A look at the difference in living standards and prospects between countries around the world, how this is measured, and how this impacts your life. Human Geography - A Changing World - Learning Points. The most commonly used indicator...
Curated Video
Origin of Species
How are new species created? An insight into the key evolutionary processes, played out over many generations, which lead to speciation. Biology - Adaptation And Evolution - Learning Points. We all originate from a single cell, so why...
Curated Video
Overpopulation
The global population is growing rapidly and soon the world could be overpopulated. Life as we know it could become unsustainable. What can we do to avoid this? Human Geography - A Changing World - Learning Points. There are over 7.5...
Curated Video
Feeding the Planet
As the world's population grows, how will we cope with the increasing demand for food? What would happen in a food crisis, and what can be done to prevent one? Human Geography - A Changing World - Learning Points. As the population of...
Curated Video
Manila: Megacity
With a growing population and an already overcrowded urban area, Manila's infrastructures are struggling to cope. Human Geography - A Changing World - Learning Points. Manila is a megacity, with over 12 million inhabitants. There are...
Curated Video
The Most Populous Country
When will India overtake China as the world's most populous country? Maths - Number A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s math films show abstract concepts in action in the real world.
Curated Video
Demographic Transition Model
Exploring models which describe changes in birth and death rates as countries go through five stages of development. How does development impact population age and rate of change? Human Geography - A Changing World - Learning Points. The...