Honeybees are vulnerable to seasonal die-offs Nicholas Klein/Alamy
Honeybees in the US may have just experienced their most severe die-off on record, and we don鈥檛 know exactly why.
鈥淎s of right now, it does look like this is going to be the largest colony loss that we鈥檝e experienced in at least the last 25 years 鈥 and probably in US history,鈥 says at Cornell University, New York.
Beekeepers in the US often experience some colony losses over the winter 鈥 for instance,
