Why put a 1.2MW turbine in the ocean when you can get away with smaller ones that cost less?
The ocean has great potential as a renewable energy source, but the industry struggles with technical challenges, harsh environments, and environmental permitting.
Audio of Al Gore's speech on energy and climate change; bacteria could produce hydrogen from food waste; EPA issues report on health risks from climate change; SunPower battered by solar policy uncertainty; and Kleiner Perkins' green tech bet.
The only bad thing about tidal power is that it's largely experimental at the moment. But that could change.
Sales of Android tablets shot up by 127% last year, accounting for 62% of all sold, and overtaking iPads for the first time.
Samsung is planning a tidal wave of tablets in Q1 2014, according to reports, including a Galaxy Tab 3 Lite for less than £100.
Crabster CR200, designed to overcome mobility challenges in rough water, is also a frighteningly awesome-looking robot.
In its latest budget request, the space agency asks for a little coin for a trip to one of the other places in our solar system with the best chance of harboring life.
A Japanese company will soon test the first renewable energy source to harvest the power of the wind and ocean.