Picture shows graduated engineer Harald Brugger from the Vienna-based Umweltberatung consulting agency, undated. He warned that anyone getting too close to a nest of the invasive species was at high risk of getting stung "several times." (NewsX/Bee)
Picture shows propolis in a beehive, undated. Propolis is a resin that bees create which contains a mixture of bee saliva, beeswax and substances from plants. (NewsX/Bee)
Propolis Properties In The Focus At Farming Fair
Agriculture Minister Norbert Totschnig (left) and entomologist Thomas Zuna-Kratky pose in an undated photo. The team of scientists headed by Dr Thomas Zuna-Kratky from Vienna University's Department of Evolutionary Biology found that 1,580 square kilometres of soil - which is four times the size of the federal capital - had been sealed within the last 30 years. (BML/Hemerka, NewsX/Bee)