This is a fascinating film, but more importantly, it's a convincing one.

While platitudes about how this is really just about love - not money or industry or good old-fashioned greed - are far too simplistic, at least the movie attempts to make its issues feel personal enough to make people care.

It's dense but nutritious. The science is explained in simple terms with plenty of visually striking graphics and animation.

Thoughtful docu addresses solutions to soil erosion crisis.