A project centered around the development of a subsea wave energy converter has taken another step forward after its two major constituent parts were joined together at a facility in Scotland. According to a statement from AWS Ocean Energy on Wednesday, the assembly, which it described as "a critical milestone", took place last week.

Greenhouses and solar panels both need to be placed in areas with a lot of sunlight - so why not combine the two? Semi-transparent solar cells could potentially be built into the glass roof panels of greenhouses, capturing light at wavelengths that plants don't use anyway. Now, researchers at North...