Hybrids, Electric Cars Are Too Quiet, says DOT
The Department of Transportation is proposing a rule that requires these cars to emit sounds at slow speeds.
The Department of Transportation is proposing a rule that requires these cars to emit sounds at slow speeds.
Electric motorcycles are rising in popularity and could become an export market for the US.
Could this be a global warming design? The Water Discus concept is modular, so it can be adapted to different environments or moved if conditions change.
The research raises even more questions on the usefulness of natural gas as a bridge fuel from coal.
In a rare move, Apple filed a patent for a wind turbine, which purportedly solves the problem of intermittency.
The Department of Energy is a prime target for spending cuts, from clean energy research to energy codes.
The city is building out 645 miles of bike lanes that will run through all its neighborhoods.
The majority of renewable energy projects in the US are in states that have mandatory Renewable Portfolio Standards.
In a testimony to the Senate, ACEEE discussed its analysis of how efficiency incentives need to be structured to be most effective.
The world's protected areas, now the size of Russia, are an important buffer to climate change.