The team showed that the device could run efficiently for 12 consecutive days and produced hydrogen with 99 percent purity.
Orbital Marine Power O2 tidal turbine will be able to single-handedly generate enough clean-power to supply 2,000 UK homes, offsetting 2,200 tonnes of CO2 a year.
Researchers have developed a generator that uses a field-effect transistor-style structure to instantly produce a surprisingly high voltage from water drops - a single drop can muster 140V, or enough power to briefly light up 100 small LED bulbs.
According to statistics, hydropower accounts for the largest share with an installed capacity of 1,172 GW, wind and solar energy account for most of the remainder with capacities of 564 GW and 480 GW respectively.
It's challenging to electrify aviation using batteries or fuel cells in part because of the weight restrictions on aircraft, so liquid biofuels have the potential to play a big role in greenhouse gas emissions reductions.
Etihad Airways has become the world's first airline to fly a commercial flight using locally produced sustainable fuel derived from plants grown in saltwater.
Spain’s state-owned chain of grand hotels often housed in ancient castles and monasteries, has announced that all 97 of its establishments will use only electricity from renewable sources from the start of the new year.
Cruise liners are a surprisingly large source of greenhouse gases and pollution, but Norwegian cruise operator Hurtigruten says it's on its way to carbon neutrality – and all thanks to dead fish.