Facebook says it has cut greenhouse gas emissions by 59% since 2017, 86% of its operations use renewable energy, as it unveils a heat recycling pilot in Denmark (David Pierce/Protocol)

David Pierce / Protocol:

Facebook says it has cut greenhouse gas emissions by 59% since 2017, 86% of its operations use renewable energy, as it unveils a heat recycling pilot in Denmark  —  It’s investing in renewable energy in a big way, but it’s tough to keep up with data center growth.