The paper presents a platform aimed at supporting space-aware communications in emergency situations. The key idea is to rely on multiple spaces, be they physical or logical, and on mappings among spaces. Thematic information is published in one or more spatial publication contexts, whereas subscribers specify one or more spatial subscription contexts. Information is delivered whenever a non-empty intersection among publication and subscription contexts is recognized according to the space mappings. The platform defines basic space models that can be specialized to model domain-specific spaces. The paper overviews the basic platform mechanisms, sketches their exploitation in a concrete scenario and briefly discusses related works.