Wave power generation is relatively new in the world. In Europe, a Scottish company operates a few large scale projects off the Portuguese coast since 2007 and the UK government has just okayed a different type of wave power project to be moored on its coastal waters. There's little activity in the US as yet on the wave power scene. So what are the advantages and what are considered challenges?

WASHINGTON - Disease spread to wild bees from commercially bred bees used for pollination in agriculture greenhouses may be playing a role in the mysterious decline in North American bee populations, researchers said on Tuesday.

Bees pollinate numerous crops, and scientists have been expressing alarm over their falling numbers in recent years in North America. Experts warn the bee disappearance eventually could harm agriculture and the food supply.