Dr. Forrester identifies the forms of energy used to power electricity by examining solar power, wind power, and hydroelectric power. She also discusses the benefits of using alternative, renewable resources of energy by listing ways to...

When will be run out of oil? Why haven’t we run out of oil already?



In 1977, President Jimmy Carter went on TV and declared that the biggest crisis that we were going to face in our...

Today you’ll learn how to plan and answer the toughest Task 2 question from the IDP website.







I found this mixed Task 2 question on IDP’s website. Although it is older, it could still be found...

What's the key to using alternative energy, like solar and wind? Storage -- so we can have power on tap even when the sun's not out and the wind's not blowing. In this accessible, inspiring talk, Donald Sadoway takes to the blackboard to...

General Motors veep Larry Burns previews cool next-gen car design: sleek, customizable (and computer-enhanced) vehicles that run clean on hydrogen -- and pump energy back into the electrical grid when they're idle.

Sound waves from the nascent universe, called baryon acoustic oscillations (BAOs), left their imprint on the cosmos by influencing galaxy distribution. Researchers have explored this imprint back to...

Why existence? Why is there something rather than nothing? Why are we even here at all.We know a lot about the “how” and the “What” of our existence, but we don’t know much about the “why” of our...

Resonance is a concept used to describe delocalization of electrons in a molecule across multiple atoms. In resonance structures, electrons are shared between atoms in ways that stabilize the molecule. This "electron dance" can lower the...

The Sol zinc process, developed by an international team of scientists led by chemical engineer Michael Epstein, harnesses solar energy to extract hydrogen from water at a lower cost. By utilizing a solar tower surrounded by mirrors to...

In this video, the presenter discusses the interaction between electromagnetic waves and charged particles. The video covers examples of radio waves interacting with electrons and how they can create alternating currents in appropriate...

Wave and tidal power are a developing form of renewable energy. How do they work and what makes them desirable alternatives to other forms of renewable energy? Earth Science - Earth's Resources - Learning Points. The Atlantic Ocean and...

Of all the mundane yet astonishing marvels of human ingenuity, knowing what it takes to heat a room to a comfortable temperature is TED Fellow Kathy Hannun's favorite. She takes us on a journey across the planet and under the sea to...

The United States has a lot more power outages than other countries do, and fixing this problem will be a massive undertaking.

Cha
pters

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Across the United States, the average customer loses...

This film explores some of the Hard Engineering solutions used in coastal process management. Explore the different ways in which these solutions work, and the positive and negative aspects of their use. Earth Science - Geology -...

The video explores the production of ethanol and its various uses. It starts by discussing the importance of ethanol as a clean-burning fuel and a widely used industrial solvent. The video then explores different ways of producing...

Concrete is responsible for 8% of humanity’s carbon emissions because making its key ingredient - cement - chemically releases CO2, and because we burn fossil fuels to make it...

Physicists have been struggling for some time to figure out why our universe is so comfy. Why, for example, are the fundamental constants - like the mass of the electron or the strength of the forces - just right for the emergence of...

What do we think the universe is quantum? What if the universe was not quantized?

Classical mechanics was doing just fine after Isaac Newton reduced nearly all mechanical phenomena to a single powerful equation:...

On April 15, a brief burst of high-energy light swept through the solar system, triggering instruments on many NASA missions. Now, multiple international science teams conclude that the blast came from a...

Dynamic models are essential for understanding the system dynamics in open-loop (manual mode) or for closed-loop (automatic) control. These models are either derived from data (empirical) or from more fundamental relationships (first...

One of the greatest factors contributing to the ensuing world energy crisis is our dependence on the humble automobile – or, more specifically, the oil on which it runs. Not only does the oil that feeds our daily commute erode our...

Wires | Electricity | Physics | FuseSchool



A broken wire means t
wo things;
1. It won’t work pr
operly anymore.
2. It’s dangerous and
shouldn’t be used.
In this video...

Asexual reproduction only needs one parent; all the offspring are clones. This means they are genetically identical to one another and to the parent. Many plants use asexual reproduction, like spider plants. Bacteria also reproduce...

At a time when the world faces a multitude of potential calamities ranging from climate change to water pollution and plastic pollution, to rapid population growth, the solution may well be in the sea around us. “It is water,...