MinuteEarth
Vampire Life is Hard
Blood-suckers may seem like they have it easy, but feeding on blood comes with a lot of challenges.
Bozeman Science
Stimulated Emission
In this video Paul Andersen explains how stimulated emission can be used to create coherent light. When an atom absorbs a photon it moves to a higher energy level through stimulated absorption. It may then release a photon and moves to a...
TED-Ed
TED-Ed: What would happen if every human suddenly disappeared? - Dan Kwartler
Human beings are everywhere. With settlements on every continent, we can be found in the most isolated corners of Earth's jungles, oceans and tundras. Our impact is so profound, most scientists believe humanity has left a permanent mark...
TED-Ed
TED-ED: When will the next mass extinction occur? - Borths, D'Emic, and Pritchard
About 66 million years ago, a terrible extinction event wiped out the dinosaurs. But it wasn't the only event of this kind -- extinctions of various severity have occurred throughout the Earth's history -- and are still happening all...
TED-Ed
TED-Ed: How smart are dolphins? - Lori Marino
Dolphins are one of the smartest animal species on Earth. In fact, their encephalization quotient (their brain size compared to the average for their body size) is second only to humans. But exactly how smart are they? Lori Marino...
MinuteEarth
The Science of Roadkill
Surprisingly, flattened fauna can teach us a lot about wildlife biology.
MinuteEarth
Why Most New Species Are Discovered By Amateurs
Most new species are discovered by amateurs because nowadays non-professionals are actually better suited to the requirements of new species “discovery.”
MinuteEarth
Why Exercise Is Hard
Because exercise isn't essential for short-term survival, we don't exercise enough, so we need to reincorporate purposeful physical activity into our lives.
MinuteEarth
MinuteEarth Explains: Human Evolution
In this collection of classic MinuteEarth videos, we answer the question "why are you the way that you are?"
TED-Ed
TED-ED: How do fish make electricity? - Eleanor Nelsen
Nearly 350 species of fish have specialized anatomical structures that generate and detect electrical signals. Underwater, where light is scarce, electrical signals offer ways to communicate, navigate, find, and sometimes stun prey. But...
MinuteEarth
Where Does One Ocean End And Another Begin?
Earth's ocean water is continuous. How can we divide it into sections that are more useful?
TED-Ed
TED-Ed: Phenology and nature's shifting rhythms - Regina Brinker
With rapidly rising global temperatures come seasonal changes. As spring comes earlier for some plant species, there are ripple effects throughout the food web. Regina Brinker explains how phenology, or the natural cycles of plants and...
TED-Ed
TED-ED: When will the next ice age happen? - Lorraine Lisiecki
Throughout Earth's history, climate has varied greatly. For hundreds of millions of years, the planet had no polar ice caps. Without this ice, the sea level was 70 meters higher. At the other extreme, about 700 million years ago, Earth...
Bozeman Science
Hydroelectric Power
In this video Paul Andersen explains how energy can be harnessed was water moves through a turbine. Three types of systems are discussed in the video; run-of-the-water, impoundment, and tidal. Several advantages and disadvantages of dams...
MinuteEarth
MinuteEarth Explains: Space
In this collection of classic MinuteEarth videos, we travel beyond Earth and explore some of our favorite mysteries about space.
Bozeman Science
Health Impacts of Pollution
In this video Paul Andersen explains how chemicals can cause both chronic and acute diseases. A discussion of the five main types of toxins; neurotoxins, carcinogens, teratogens, endocrine disruptors, and allergens is including. The LD50...
TED-Ed
TED-ED: How to create cleaner coal - Emma Bryce
It takes a lot of fuel to heat our homes, preserve our food, and power our gadgets. And for 40 percent of the world, cheap, plentiful coal gets the job done. But coal also releases pollutants into the air, causing environmental damage...
TED-Ed
TED-Ed: Do animals have language? - Michele Bishop
All animals communicate. But do they have language? Michele Bishop details the four specific qualities we associate with language and investigates whether or not certain animals utilize some or all of those qualities to communicate.
MinuteEarth
Why Sewers Around the World Keep Overflowing
The old combined sewer systems of many major cities are no match for modern storms and impermeable surfaces.
MinuteEarth
Invasion Of The Earthworms!
Worms cause major changes to ecosystems, but those changes aren’t always new.ommunication.
TED-Ed
TED-ED: Cannibalism in the animal kingdom - Bill Schutt
Until recently, scientists thought cannibalism was a rare response to starvation or other extreme stress. Well-known cannibals like the praying mantis and black widow were considered bizarre exceptions. But now, we know they more or less...
TED-Ed
TED-ED: Why are fish fish-shaped? - Lauren Sallan
In tropical seas, flying fish leap out of the water, gliding for up to 200 meters, before dipping back into the sea. In the Indo-Pacific, a hunting sailfish swims up to 110 kilometers per hour. These feats are made possible by a fish's...