Severe weather events are never good at any time. But this footage may have an unexpected impact. This footage shows the extent of the devastation in China after deadly floods batter Henan, which is home to some 99 million people. At least 100,000 people have been evacuated in Zhengzhou alone – an industrial and transport hub. Also in Zhengzhou, 12 people died on Tuesday after being trapped for hours on a flooded subway line. But why is this more significant than other weather events? Facilities in Zhengzhou produce more than half the world’s iPhones.