The side effects of the European heatwave Europe could break an all-time temperature record in the next few days. Here are just some of the developments - some weird, some disturbing - that the heatwave has sparked across the Continent...1. Potatoes are also in peril, with reports they will be smaller than normal this year after the rigours of a cold winter and a freakishly hot summer. Toxic algae in the BalticSwimming is off limits on both sides of the Baltic, thanks to a major bloom of toxic algae triggered by the weather. But the more southern cities of Munich and Vienna declined, crowing that they had recently enjoyed a burst of rain.