Earlier this month, production began in Alberta, Canada on director Christopher Nolan's sci-fi thriller Interstellar. The only plot details thus far reveal that the story follows a group of scientists travelling through a wormhole to explore new dimensions of time and space.

But why are they embarking on this journey? We have new answers from the Fort McLeod Gazette. Beware, there are spoilers below, so read this excerpt from the article at your own risk.

"Set in the future, the movie details the toll climate change has taken on agriculture, with corn the last crop to be cultivated. The scientists embark on a journey through a worm hole into other dimensions in search of somewhere other crops can be grown."

If this plot synopsis is correct, Christopher Nolan is tackling some major issues in terms of agriculture and climate change with his sci-fi thriller. The article goes onto describe a scene from the movie, as filming took place on Wednesday in Fort McLeod, Alberta, Canada with stars Matthew McConaughey, Jessica Chastain and John Lithgow. The actors participated along with the crew in creating a large dust storm in the middle of town. Matthew McConaughey was seen driving a truck through the dust storm as he made his way down main street, with John Lithgow in the passenger side. Huge fans helped stir up the dust to create this illusion, as crew members hurried to distribute sand, creating an environment with limited visibility.

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The movie is shooting under the title Flora's Letter, so any readers in Alberta should be on the lookout for small yellow signs adorned with this title. Christopher Nolan is directing from a screenplay he co-wrote with his brother, Jonathan Nolan, with Warner Bros. having already issued a November 7, 2014 release date.