This brilliant film by the Primary 1 Class at Hanover Street Primary School was chosen as the Scottish Champion of the Total Green School Awards 2015.  It starts 70 years into the future, with a planet so polluted that you can't go outside without oxygen tanks, the trees are all dying and all the children stay indoors playing on their computers.
Dressed as their 75 year-old selves, the children visit a museum and find a time machine invented by a professor back in 2014, which they use to travel back to the present day.  They find out what they can do to save themselves and the planet and take action to make sure that they are not doomed!