An Associated Press TV reporter said around 20 activists on the ground were detained The EU leaders are set to debate ways for the 28-nation bloc to become carbon neutral by 2050 BRUSSELS: Greenpeace activists on Thursday scaled the European Union’s new headquarters, unfurling a huge banner warning of a “climate emergency” hours before the bloc’s leaders gather for a summit focused on plans to combat global warming. Around 30 environmental activists clad in red and wearing climbing gear stood on ledges of the Europa building in Brussels as police gathered below and a helicopter circled overhead. An Associated Press TV reporter said around 20 activists on the ground were detained. The group managed to climb the building by using the ladder of an old fire truck and has enough food to last for two days, according to Greenpeace spokesman Mark Breddy. The EU leaders are set to debate ways for the 28-nation bloc to become carbon neutral by 2050. But poorer coal-dependent nations fear they could be hardest hit by the effort to transform their energy sources. European Commission President Ursula von der Leyen unveiled Wednesday a new “European Green Deal” with an offer of some 100 billion euros ($130 billion) to help fossil-fuel reliant EU nations that make the transition to lower emissions. The EU leaders will also discuss their long-term budget plans, the euro single currency and Brexit in the light of British election results.