Yesterday, Australian scientists disclosed that they have attached micro sensors to honeybees with a motive to know about what exactly is leading to the death of bees in the world.

The killing of honeybees has become a major issue as their population has seen a steep fall. The world can't afford to lose them as they pollinate around 70% of global crops and thus has raised fears regarding food security.

According to the researchers the fall in their numbers was a result of factors, including the mysterious unexpected death of millions of adult insects in hives, called 'colony collapse disorder', and due to blood-sucking mites known as Varroa, pesticides and change in climate.

Gary Fitt, insect expert from Australia's national science agency, the CSIRO, said, "The microsensors help us to ask different questions because we've never really been able to quantify the behaviour of bees".

Scientists have fixed the sensors to the back of European honey bees and the data collection receptors have been built into hives. These sensors are 2.5mm in width and breadth and weighing 5.4mg, which means they are even lighter than pollen.

The tiny location-tracking backpacks are unique and respond to the radio base stations when the bee carrying it makes a move. With time, these readings will help out scientist with a picture of the insects' movements.

Fitt said they have been trying to gather some information regarding where the bees actually go, in and out of their hives.