Hollywood A-lister Leonardo DiCaprio has recently devoted himself to raising awareness of the negative effects of climate change and his new environmental documentary Before the Flood will soon be on National Geographic. The eco-flick is slated to premiere on National Geographic on October 30 and will be available commercial-free in over 170 countries and 45 languages. Before the Flood will also appear on YouTube, Facebook, Twitter, Amazon, iTunes and Google Play entirely free of charge from October 30 till November 6. National Geographic says it’s distributing the movie for free as part of its cause to spread the word about the dangers of climate change. This marks the first…

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