The transport sector is the fastest growing contributor of greenhouse gases. Electric vehicles are a cost-effective solution.
At the moment, fuel taxes pay for most of the maintenance of US roads, bridges and highways. What happens when the majority of cars no longer run on gasoline?
Who are the 'gilets jaunes', what do they want and how has France's political establishment responded to their populist challenge?
Australians are crying out for political leadership. One way our leaders can redeem themselves is by getting to work on a complete shake-up of how we pay for and use transport infrastructure.
Critics of Australia's fuel tax credits system have pointed to its impact on the budget bottom line, but calculating that cost is far from straightforward.
Obama's proposal to add $10 tax to crude oil raises the thorny question of whether the U.S. can continue to fund its highway infrastructure with a fuel tax that hasn't changed since 1993.