Spinning electricity out of thin, moving air

The sun’s beaming rays heat the Earth, but not evenly. Many attributes of the Earth – such as its atmosphere, topography, bodies of water, and rotation – contribute to uneven heat distributions, which create air movement, or wind []. Windmills use wind-generated kinetic motion to perform useful work, such as pumping water or grinding grains, whereas wind turbines use it to generate electricity []. Wind … Continue reading Spinning electricity out of thin, moving air

Electric Vehicles and Hybrids: Where are we now?

As President Eisenhower said, our “transportation systems are dynamic elements in the very name we bear—United States.  Without them, we would be a mere alliance of many separate parts.” (Pres. Dwight D. Eisenhower, Feb 22, 1955). The automobile became a household staple and a powerful symbol of our industrialized economy, such that cars are now intimately intertwined with our lives. As we move into the … Continue reading Electric Vehicles and Hybrids: Where are we now?

Black Silicon: Working around the current limits of solar cells

For many years, sunlight has been seen as a potential gold mine of useable energy for our global needs.  Having successfully used the sun to grow food to feed the world, people are now trying to harvest the sun’s energy and convert it into electric energy.  The principle way this has been accomplished is through the use of solar cells, also known as solar photovoltaics … Continue reading Black Silicon: Working around the current limits of solar cells

Improving diagnostic testing for infectious diseases

Most visits to a doctor or hospital occur when a patient feels under the weather, but is unsure of the cause of the symptoms or the best way to treat them. For example, sniffles and a sore throat could be caused by seasonal allergies or the flu, each of which must be treated with different medications. In such cases, physicians rely on diagnostic tests to help them decide on the appropriate course of treatment.
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Climate Change: What We Know and Where We Go From Here

Presented by Elizabeth Thomas, Sujit Datta, and Atreyee Bhattacharya During the last three billion years, Earth’s climate has nurtured life. However, records of Earth’s history indicate that climate has changed dramatically with major consequences for its inhabitants. What drives such climate changes? What are the consequences? In tonight’s lecture, we discuss the effects that greenhouse gases can have, as well as a novel engineering approach … Continue reading Climate Change: What We Know and Where We Go From Here

Is the Robot Apocalypse Just Around the Corner?

— If you believe Hollywood’s interpretation, the advent of intelligent robots rarely ends well for mankind. Movies like The Matrix, Terminator, and I, Robot all depict robots as quite intelligent, capable, and horrifyingly destructive machines that either aim to enslave us, or worse, bring about the extinction of the human race. In these cinematic examples, robots are rarely helpful or friendly (with the occasional exceptions like Wall-E or R2-D2). Intelligent robots with the capacity to take over the world are fine as long as they remain in the realm of science fiction. But are highly capable robots confined to the silver screen? When you read the news and see titles like “Evolving robots learn to lie to each other,” “Tiny robots are ready to spy on us,” “Are we being watched by flying robotic insects?,” “A real-life robotic avatar turns you into a machine,” or consider that IBM’s Watson can handily defeat humans on Jeopardy, you might think that it’s time to panic. Or you may wonder what exactly all those reckless scientists are thinking – haven’t they seen the movies? Why don’t they stop before it’s too late? Continue reading Is the Robot Apocalypse Just Around the Corner?

The Nanotechnology Solution to the Global Water Challenge

— It has been said that “water is the next oil.” Just like oil, water — specifically, clean drinking water — is a resource that is rapidly depleting. Every year, 1.2 billion people do not have access to safe drinking water, and millions of people die, including almost 5000 children a day, from various waterborne diseases. These numbers are increasing as the world population keeps growing. Continue reading The Nanotechnology Solution to the Global Water Challenge