Curated Video
Human Population Growth - Crash Course Ecology
If being alive on Earth were a contest, humans would win it hands down. We're like the Michael Phelps of being alive, but with 250,000 times more gold medals. Today Hank is here to tell us the specifics of why and how human population...
Curated Video
BIOLOGY - Environment - Global population growth
From about 2 million years ago until 13,000 years ago there were several human species inhabiting the earth. In fact, 100,000 years ago there were at least 6 different human species! Today there’s just us: Homo sapiens. In this video...
Bozeman Science
Exponential Growth
Paul Andersen explains how populations experience exponential. He begins by address the major players; N (population size) and r (growth rate). He models population growth in rabbits through four generations. He then shows you how to use...
Curated Video
Understanding Populations and Factors Affecting Population Growth
This video is a lecture presentation on populations. The presenter defines the terms population, community, and ecosystem and explains how these terms are related. The factors affecting the size of a population, such as food supply,...
Bozeman Science
r and K selection
Paul Andersen explains the differences between an r and a K selected species. He starts with a brief description of population growth noting the importance of; r or growth rate, N or number of individuals in the population, and K the...
Curated Video
Global population growth | Environment | Biology | FuseSchool
Global population growth | Environment | Biology | FuseSchool From about 2 million years ago until 13,000 years ago there were several human species inhabiting the earth. In fact, 100,000 years ago there were at least 6 different human...
Bozeman Science
Logistic Growth
Paul Andersen explains how populations eventually reach a carrying capacity in logistic growth. He begins with a brief discussion of population size ( N ), growth rate ( r ) and exponential growth. He then explains how density dependent...
Bozeman Science
Populations
Paul Andersen explains how populations interact in an ecosystem. The symbiosis of several populations is based on effects that may be neutral, positive, or negative. Interactions like mutualism, commensalism and parasitism are included....
Bozeman Science
Communities
Paul Andersen explains the major classification terms in ecology and how a community can be measured by species composition and species diversity. The symbiosis of leaf cutter ants is included. The podcast ends with a discussion of...
Primer
Simulating Competition and Logistic Growth
When resources are limited, how do populations grow (or not)?
Primer
Simulating Competition and Logistic Growth
When resources are limited, how do populations grow (or not)?
Bozeman Science
Ecosystems
Paul Andersen explains how ecosystems interact with biotic and abiotic factors. He explains and gives examples of food chains and food webs. He shows how limiting factors eventually leads to logistic growth. Real data from Yellowstone...
Curated Video
Agricultural Solutions for Feeding a Growing Population: GM Organisms, Fertilizers, and Biological Control
This video explores agricultural solutions that can help feed the growing human population. It discusses three methods: genetically modified organisms (GMOs) to control pests, fertilizers to increase crop growth, and biological control...
Curated Video
Binary Fission - How Do Bacteria Divide? #12
This video covers: - How bacteria divide by binary fission - How to calculate bacterial population growth - The optimum conditions for bacterial growth
Curated Video
Antibiotic Resistance
You probably have heard of ‘antibiotic resistance’ before, but most people don’t realise that it’s actually the bacteria that become resistant to the antibiotics, not humans or animals. Antibiotics are a type of medicine that are used to...
Primer
How Life Grows Exponentially
Using simulations to see that populations of replicators grow exponentially.
Primer
How Life Grows Exponentially
Using simulations to see that populations of replicators grow exponentially.
Curated Video
Antibiotic Resistance | Health | Biology | FuseSchool
CREDITS Animation & Design: Joshua Thomas jtmotion101@gmail.com Narration: Dale Bennett Script: Annika Hilgert You probably have heard of ‘antibiotic resistance’ before, but most people don’t realise that it’s actually the bacteria that...
Curated Video
Bacteria in digestion | Physiology | Biology | FuseSchool
CREDITS Animation & Design: Joshua Thomas jtmotion101@gmail.com Narration: Dale Bennett Script: Bethan Parry Digestion is a complex process that our bodies carry out using a variety of chemicals. In this video we’re going to focus on the...
Curated Video
What Are Fertilisers? | Agriculture | Biology | FuseSchool
What Are Fertilisers? | Agriculture | Biology | FuseSchool What are fertilisers? Fertilisers help to plants grow, thus increasing crop yields. They contain helpful nutrients and minerals like nitrogen, potassium and phosphorous which aid...
Amoeba Sisters
Characteristics of Life
We chose not to give a numerical value for how many characteristics of life there are, because we do not want to imply that what we are listing must be a specific order, or that it cannot be expanded upon or include exceptions....
TED Talks
Geoffrey West: The surprising math of cities and corporations
Physicist Geoffrey West has found that simple, mathematical laws govern the properties of cities -- that wealth, crime rate, walking speed and many other aspects of a city can be deduced from a single number: the city's population. In...
TED-Ed
TED-ED: Why do people get so anxious about math? - Orly Rubinsten
Have you ever sat down to take a math test and immediately felt your heart beat faster and your palms start to sweat? This is called math anxiety, and if it happens to you, you're not alone: Researchers think about 20 percent of the...
Science360
Even healthy corals have viruses - Science Nation
Corals are important ecosystem engineers, providing habitat and nutrient recycling to tropical reefs. However, coral species' richness and abundance are in decline worldwide, due in large part to the impacts from global industrialization...