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There can't be many people still resistant to the inconvenient truth of climate change.
But any that are should be made to see Jeff Orlowski’s eco-doc, which charts the efforts of National Geographic photographer James Balog to film time-lapse imagery of glacial retreat.
As this heroic campaigner battles harsh conditions and a bum knee to install 30 cameras across three continents, some may ask whether it’s worth the trouble.
They’ll soon be silenced by the jaw-dropping results: visually spectacular montages of ice floes receding that will make you gasp and move you to tears.
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Neil Smith is a freelance film critic who has written for several publications, including Total Film. His bylines can be found at the BBC, Film 4 Independent, Uncut Magazine, SFX, Heat Magazine, Popcorn, and more.