In a study at Panjab University in Chandigarh, northern India, researchers fitted cell phones to a hive and powered them up for two fifteen-minute periods each day.
After three months, they found the bees stopped producing honey, egg production by the queen bee halved, and the size of the hive dramatically reduced.
It's not just the honey that will be lost if populations plummet further. Bees are estimated to pollinate 90 commercial crops worldwide. Their economic value in the UK is estimated to be $290 million per year and around $12 billion in the U.S.
The Mobile Operators Association in England, which represents British cell companies, disagrees with the results. Link
The Telegraph has more reactions to this report. Link