Two helicopters collide as Greece battles wildfires, Hungary shuts nuclear plant

Two firefighting helicopters collided in Greece while helping to control a huge wildfire on Sunday that has destroyed more than 100 homes northwest of Athens, while a fresh blaze forced evacuations on ​the popular tourist island of Kefalonia.
Europe has been ravaged by wildfires this summer after a period of record-breaking heatwaves and little rain – conditions that scientists say have been ‌exacerbated by climate change.Destructive blazes in France and Spain showed signs of easing over the weekend, but several wildfires have broken out in Greece after a period of relative calm there.
Two helicopters collided during a firefighting operation in the area of Psatha in the Attica region, west of Athens, Greece's fire service said in a statement.
Footage posted on the Forecast Weather Greece Facebook page appeared to show two helicopters closing to cross paths at low altitude, before the main rotor of the lower ​helicopter struck the underside of the one flying above it and crashed in flames. The second helicopter then dumped its load of water and flew away. Reuters has not verified the ​authenticity of the footage.