Alternative Energies
Climate deniers attack NASA scientist dying of cancer

Readers of The New York Times were treated to a deeply touching essay this week by Piers Sellers, a NASA astronaut and climate scientist who was recently diagnosed with Stage 4 pancreatic cancer. Sellers wrote: This diagnosis puts me in an interesting position. I’ve spent much of my professional life thinking about the science of climate change, which is best viewed through a multidecadal lens. At some level I was sure that, even at my present age of 60, I would live to see the most critical part of the problem, and its possible solutions, play out in my lifetime. Now that my personal horizon has been steeply foreshortened, I was forced to decide how to spend my remaining time. Was continuing to think about climate change worth the…

Hydrogen-Powered Tram Developed in China

Fuel Cells | Hydrogen Fuel | Public Transit | TransportationIn an effort to reduce China’s harmful and plentiful greenhouse gas emissions, Chinese company Sifang (a subsidiary of China South Rail Corporation) has developed the world’s first hydrogen powered tram. The tram took two years of research and development to complete, and will be powered entirely by hydrogen fuel cells. Since this is a tram […]

Air Canada backs project to build biofuels supply chain for airports

An earlier version was originally published in the Toronto Star. Canada’s aviation sector made history in 2012 after a number of test flights showed that renewable jet fuel could be blended with regular fuel without affecting airplane performance. It started in April, when Porter Airlines used a blend of 50 per cent “biojet” fuel on a Bombardier turboprop, which successfully flew from the Toronto island airport to Ottawa. Two months later, Air Canada flight AC991 carried passengers from Toronto to Mexico City using a similar 50/50 mix. It was the first of two commercial test flights Air Canada conducted that year. “We took 43 per cent of the carbon out of that flight,” said Teresa Ehman, the airline’s director of environmental affairs. “It was phenomenal. But it raised the next…

The Lateral Axis Wind Turbine

Energy Inventions | Wind Power | Wind TurbinesSri Lankan inventor Leelananda Jayasuriya just sent us this concept for a Lateral Axis Wind Turbine. The turbine functions just like a Ferris Wheel, with the blades orbiting in an epicyclical path around the central shaft. Leelananda believes there are many advantages to his design: it can rotate with the direction of the wind, it […]