Once a year, the Delsbo Electric contest in Sweden challenges students to create and improve on the world's most energy-efficient vehicles. This year's champ, the Eximus IV, smashed the competition and all previous records with an electric equivalent of 687 MPGe (0.34 l/100km).
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Silicon is fast approaching its theoretical limit for solar efficiency, but pairing it up with other materials could help break through. Researchers have developed a new technique for combining silicon and perovskite solar cells, and reported a new record efficiency of 25.2 percent.
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A new high-tech US embassy was recently completed in London. The billion dollar project takes the form of a glazed cube. It's efficient too: the building features rainwater recycling and solar panels, and is slated for LEED Platinum and BREEM Outstanding green building certifications.
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Concentrating solar power (CSP) plants can be a key part of a renewable energy strategy, but progress is often focused on larger facilities. Now, engineers from Sandia National Laboratories are improving the efficiency of smaller plants, designing a new receiver that can absorb much more sunlight.
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Electronics don't work well in heat, which is a problem because heat is a byproduct of electricity. Researchers have developed a thermal diode that runs on heat instead of electricity. This could lead to heat-resistant computers that function in hot places like on Venus or deep inside the Earth.
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Singapore's Housing & Development Board recently called for proposals to automate the painting of its high-rise buildings. In response, ELID Technology International and Nanyang Technological University teamed up to create a robotic system that does the job.
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Considering taxpayers are footing the bill, it pays to improve the efficiency of the more than 300 million streetlights around the globe. A team in Germany has now developed an array of low-power LEDs that are more efficient, safer, cooler, and easier on the eyes.
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As emissions regulations tighten and congestion gets worse, manufacturers are being forced to delve deep into their engineering kitbag for clever ways to save fuel. The latest brand to unveil a smart new eco-friendly engine is Toyota, which has released a new 1.5-liter for the Yaris.
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A new study from MIT has examined modern technology through the lens of a 150-year-old economic theory of efficiency and resource consumption – and in almost all cases, the benefits of reducing required resources is cancelled out by the increase in consumer demand for them.
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Car and aircraft engine makers are all chasing engine weight savings, but boat makers too are getting in on the act. Yamaha has unveiled a new F25 motor, which is just as powerful as the engine it replaces, but significantly lighter.
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