There still seems to BEE a big mystery in America as science experts can't work out why lots of the buzzing insects have died.
The case of missing bees has become so big that farmers are now worried about their future as bees are needed carry pollen which allows crops to grow.
Some people say the vanishing honeybees are suffering from a condition called colony collapse disorder.
But nobody knows why this happens and experts are trying to find out.
Reports have said that more than two in every five bees in the American area of Pennsylvania have disappeared.