Month: July 2016

A federal appeals court ruled Friday that the US Navy was wrongly allowed to use sonar in the nation’s oceans that could harm whales and other marine life.

The Ninth US Circuit Court of Appeals reversed a lower court decision upholding approval granted in 2012 for the Navy to use low-frequency sonar for training, testing and routine operations.

Continue reading:  Federal appeals court rejects Navy sonar-use rules

A tower of salt, surrounded by sunlight-sensing and -reflecting mirrors. Photo © SolarReserve

Two months ago we posted about non-photovoltaic solar power via a story from Scientific American, and this week they’re exploring the subject again, this time in the desert of Nevada with the first utility-scale “concentrating solar” plant that can provide electricity even at night. Concentrating solar involves storing heat from the sun rather than converting light into electricity, and apparently molten sodium and potassium nitrates can do this very effectively. Knvul Sheikh reports:

Deep in the Nevada desert, halfway between Las Vegas and Reno, a lone white tower stands 195 meters tall, gleaming like a beacon. It is surrounded by more than 10,000 billboard-size mirrors focusing the sun’s rays on its tip. The Crescent Dunes “concentrating solar power” plant looks like some advanced communication device for aliens. But the facility’s innovation lies in the fact…

Dabancheng wind farm in China’s Xinjiang province (Source: Bob Sacha/Corbis, via Dailytech.com)

Wind power, as we’ve written before, has great potential as an alternative energy source, although there are certain issues to take into account. China is installing the most new wind turbines per year, but has yet to produce the most wind-generated electricity given barriers by the coal industry. Prachi Patel reports for Conservation Magazine:

China is the world’s top wind energy installer. The country’s wind installations have a capacity of generating 145 Gigawatts, twice that of the United States and about a third of the world’s total wind power. Yet the country produces less wind electricity than the US. Last month, researchers from Harvard University and Tsinghua University argued in the journal Nature Energy that this underperformance is due to deliberate favoring of coal over wind by grid operators, delays in connecting new wind farms to the…