10 fascinating natural phenomena and why they happen every summer

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World's 10 Strangest Natural Phenomena
World's 10 Strangest Natural Phenomena

Summer is usually one of the most anticipated seasons of the year. After all, there is no better time to enjoy the outdoors and the sunshine.

But summer also brings about a number of changes to our planet, from warming temperatures to dangerous thunderstorms to fireflies that flash in unison.

Here are some of the most interesting and intriguing annual summer phenomena and a quick look at why they happen:


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