GOMA, DR Congo (AFP) — Orders on Thursday to evacuate Goma, a city lying in the shadow of DR Congo’s Mount Nyiragongo volcano, have shed light on a rare but potentially catastrophic risk — a “limnic eruption,” when volcanic activity combined with a deep lake can spew out lethal, suffocating gas. The phenomenon first came to the world’s attention in August 1984, when 37 people mysteriously died at Lake Monoun in western Cameroon. Scientists found […]