Thousands of pumpkin lanterns bring Halloween to life every year across the UK - only for 18,000 tonnes of the distinctive orange gourds to be thrown away once their spooky role is over - the equivalent of 360 million portions of pumpkin pie! If they are sent to landfill, they decompose and produce methane, an extremely harmful greenhouse gas . But there are plenty of ways you can reuse them, helping to keep your creative juices flowing and benefitting the environment at the same time. Eat it