Will hydrogen-powered cars drive us into the future?
Electric cars like Nissan's Leaf and the Tesla are grabbing all the headlines, but big car makers like Toyota and Hyundai are pumping billions into hydrogen-powered technology. Toyota, for instance, expects 30 percent of all vehicles to be hydrogen powered by 2050.
A small hydrogen-fuelled car company called Riversimple calls itself the only independent hydrogen car startup in the world.
Officials from Australia's Border Force say a group fisherman from Papua New Guinea who were rescued after spending six days stranded in the Torres Strait are lucky to be alive.
The nine men had been drifting on a 7 metre banana boat along the Warrior Reef when they were spotted by a Maritime Border Command helicopter.
Figures raise concerns that emissions from ships are having a significant but overlooked impact on health in port and coastal towns.