Unlike its competitors, Solarlite evaporates water instead of thermal oil which makes it more environmentally friendly.

FORBES: Thailand Opens The First of Fifteen Solar Thermal Plants Using Solarlite Technology

Although the sustainability of these alternative biofuels makes it an environmentally friendly option for progressive airlines, widespread adoption of recycled cooking oil requires that usage spreads, making the fuel more affordable for budget-strapped airlines.

BBC: Cooking oil powers transatlantic flights

Flight AC991 from Toronto to Mexico City is expected to generate at least 40 per cent fewer emissions by using jet fuel derived from recycled cooking oil and through other fuel-saving measures, making it the most environmentally-friendly flight ever flown by Air Canada.

ENGADGET: Air Canada embarks on its first biofuel-powered flight from Toronto to Mexico City

The oil sands were an important national resource, but had to be expanded in an environmentally friendly way.

ECONOMIST: Canada