The Guardian
The weight of light: how gravity is illuminating sub-Saharan Africa
Off-grid communities such as those in sub-Saharan Africa can pay thousands of times as much as the rest of us for their energy. Designer Jim Reeves has developed a simple, low-cost gear-train and generator that uses a descending weight...
Curated Video
What Have Sunflowers Got To Do With Nuclear Disasters?
Sunflowers are the international symbol for nuclear disarmament. You will most likely find sunflowers around areas where nuclear disasters have occurred in the past. Following the 1986 meltdown at the Chernobyl Power Plant in Ukraine,...
Vlogbrothers
How Much Does Humanity Weigh?
For a final twist, all mammals are just 7% of animals, and all animals are LESS THAN ONE PERCENT of the Earth's biomass. We have always and will forever to continue to live in the age of plants, which make up more than 80% of all biomass...
Vlogbrothers
The Weight of Life
In which John expands on a recent Hank video to consider how explore Earth's total biomass, and how the 550 gigatons of carbon in Earth life is divided among different kinds of creatures. From gingko trees to e. coli, it's important to...
FuseSchool
Power Stations & The National Grid
The flick of a switch, that’s how easy it is to get electricity, right? If you’re one of the lucky ones, then yes. But in 2017 there are still over 1 billion people who do not have access to electricity. In this video we will discuss how...
Curated Video
Efficiency of Biomass Transfer in Trophic Levels
The video discusses the concept of the efficiency of biomass transfer, which is a measure of the percentage of total biomass that is transferred from one trophic level to another in a food chain. The video uses a specific example of a...
Curated Video
Efficient Food Production: Farming and Fishing Techniques
The video is a lecture on farming and fishing, with a focus on increasing the efficiency of food production. The video discusses various techniques and methods to increase the transfer of energy between levels in a food chain, including...
Michigan Radio
Burning Grass for Alternative Electricity
Energy experts are thinking about ways to replace coal that’s burned in American power stations. One alternative is to burn plants because they can produce fewer greenhouse gas emissions. This results in biomass power. Listen to learn...
Curated Video
The Transfer of Biomass in Food Chains: Efficiency and Energy Loss
This video is a lecture presentation on the transfer of biomass in food chains. The presenter explains how processes carried out by living organisms can affect the amounts of biomass and energy transferred from one trophic level to...
Mediacorp
Alternative Protein Sources: Micro Algae and Cricket Flour
Micro algae is the grime we are used to seeing in fish tanks and other aquatic environments. It could also be an important ingredient in future foods. Learn about the nutrients in micro algae and about it's many food-use potentials. Lab...
NASA
NASA | Scientists Link Earlier Melting Of Snow To Dark Aerosols
Tiny particles suspended in the air, known as aerosols, can darken snow and ice causing it to absorb more of the sun’s energy. But until recently, scientists rarely considered the effect of all three major types of light-absorbing...
NASA
NASA's Laser Mission to Measure Trees
The Global Ecosystem Dynamics Investigation (GEDI) is a lidar instrument that sends laser pulses down to Earth, where they penetrate the globe's temperate and tropical forests. The laser beams ricochet off the first thing they hit, which...
NASA
NASA's ICESat-2 Looks Beyond the Icy Poles
ICESat-2's main science objective is ice, but the mission is also able to measure the heights of other features, including ocean bathymetry, trees and mountain glaciers. Ryan Fitzgibbons (USRA): Lead Producer Aaron E. Lepsch (ADNET):...
NASA
Mapping Carbon in 3-D
NASA's new laser instrument, the Global Ecosystem Dynamics Investigation, or GEDI, has advanced laser technology that will reveal the makeup of remote forest ecosystems around the globe. GEDI will soar above Earth at 17,150 miles per...
FuseSchool
Energy Sources
Energy Sources | Energy | Physics | FuseSchool There are many different sources of energy, how many can you name? Sources of energy include burning coal, oil, gas and biomass, solar, hydroelectric, tidal, wind, muscle power, geothermal,...
Curated Video
Pyramids of Biomass: Understanding Relative Amounts of Organic Matter in Food Chains
This video is a lecture presentation on pyramids of biomass. The presenter explains the concept of biomass and trophic levels in a food chain. The video provides a graphical representation of the relative amounts of organic matter found...
Curated Video
Trophic Levels and Biomass in Ecology
The video discusses the important ecological concepts of trophic levels and biomass. The video provides an example of a food chain, from grass plants as producers to apex predators that have no predators of their own. The video explains...
FuseSchool
Different Types of Fuels for Transportation
Learn the basics about the different types of fuels, and their roles in transportation, as a part of environmental chemistry.
Curated Video
The Devastating Effects of Deforestation and Peat Bog Destruction on Habitats
The video is a lecture presentation discussing the topic of destruction of habitats, specifically focusing on deforestation and peat bog destruction. The speaker explains the various reasons behind deforestation, including the need for...
Science360
New nanotechnology to produce sustainable, clean water for developing nations
The world's population is projected to increase by 2-3 billion over the next 40 years. Already, more than three quarters of a billion people lack access to clean drinking water and 85 percent live in the driest areas of the planet. Those...
FuseSchool
Ecological Pyramids
Learn all about ecological pyramids and how to show quantitative data about relationships between species.
Science360
Green Gasoline
Like everyone else, George Huber knows money doesn't grow on trees. But, ask him where gasoline comes from and he won't just tell you, he'll show you. To fully understand, Science Nation recently went with Huber to a local lumber yard in...
Getty Images
Pitiable Senior asian woman Sitting a Cooking Food
Pitiable Senior asian woman Sitting a Cooking Food