High temperatures seem to disrupt bumblebees' ability to smell, a sense they rely on to feed and pollinate. Exposing the antennae of two species of bumblebee (Bombus pascuorum and Bombus terrestris) to 40 oC heat for just 3 hours made them significantly less responsive to scent molecules, a change that persisted a day later. "The results are pretty clear: There is an effect of heat waves on bumblebee physiology," says ecologist Coline Jaworski.
"This is a first step," says UNICEF spokesperson Ammar Ammar. "But there is no alternative to a cease-fire because it's not only polio that threatens children in Gaza, but also other factors, including malnutrition and the inhuman conditions they are living in."
Researchers analysed distinctive furrows on Ganymede's surface that point almost directly away from the gas giant. The furrows could be the remnants of a crater formed by an asteroid that was around 300 kilometres wide, say scientists.
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