Magnum-maker grants free non-exclusive license to ice cream industry for 12 patents that help maintin ice cream quality in lower energy freezers
New ice cream is made using milk from cows fed Mootral's natural feed supplement, which can reduce methane emissions over a third
Consumer goods giant estimates changing temperature of its ice cream freezers to -12C could cut emissions by almost a third
Firm says investment in T-FIT insulation will help it become 'Britain's greenest business'