The No. 2 Bus: Human Waste Powering the Future

The No. 2 Bus: Human Waste Powering the Future

A team of UK scientists recently designed a fuel cell powered by urine. In Grand Junction, Colorado, garbage trucks and street sweepers run on natural gas extracted from human waste. The same is true for buses in Stockholm, Sweden. Bio-energy from corn crops, wood...
The Cost of Success: A Moving Target for Solar Power

The Cost of Success: A Moving Target for Solar Power

Could solar power fall victim to its own success?  That appears to be the underlying suggestion from two solar analysts who examined the industry’s long-term prospects. The problem relates to “value deflation,” a theoretical concept from economics — but one with...