Oh dear ... Is there something in the water in Oxfordshire ? What a load of tripe ...
"First objective is to help tackle the decline in bee populations which is in part down to the parasitic Varroa mite. The pest is the main source of honeybee colony mortality worldwide and is usually treated with chemicals. Not only is the Varroa developing resistance to chemicals, but there is also evidence of chemical contamination in the honey produced. For this project, The Naturesave Trust has invested in 12 innovative Thermosolar beehives, a new beehive design that uses passive solar gain to elevate the internal hive temperature. This kills off the Varroa and leaves the bees unharmed. It also, importantly, avoids the use of any chemicals. The Solar Bee Project represents the world’s biggest rollout of this new thermosolar beehive technology."
So ... those of us who have been using polystyrene, well insulated hives already know the benefit of high temperature `/ high humidity contributing to a reduction in the ability of varroa to reproduce successfully ... but .. in order to kill varroa or eliminate them it requires a much higher temperature required than the bees can tolerate for long periods.
Oh well ... no doubt the forum will have fun with this ... I'll get the popcorn out.