Data generated by travel modes can inform planners and regulators in improving the transportation system, but private mobility companies often restrict their access for concerns about privacy and competition.
Breakthrough Institute co-founder, Ted Nordhaus, explores the etymology of "carrying capacity" from a shipping term to a biological term, but objects to its application to human population. Richard Heinberg of the Post Carbon Institute responds.
At 15 billion barrels, California's Monterey Shale is said to hold the nation's largest deposit of recoverable oil. The only problem is that its extraction has not proven to be economically profitable. Blame it on the shale's unique structure.
Two reports claim wildly opposite views on where the current shale gas boom is headed. David Hughes, a Canadian geologist and fellow of the Post Carbon Institute disputes projections of energy independence. A Univ. of Texas study confirms the boom.