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The La Liga Endesa matches played this weekend, coinciding with World Climate Summit in Madrid, were CO2 neutral events.
Endesa, official sponsor of the summit, will offset the emissions of all Endesa League matches on 12 and 13 December.
In addition, this weekend, the teams in the Endesa League and the Endesa Women's League encouraged fans to make small gestures towards the fight against climate change, using public transport, electric vehicles and LED bulbs to reduce consumption.