A Spanish scientific expedition has discovered columns of gas rising from the seabed. Geologists are also warning of the possibility of huge landslides that could generate tsunamis. A team of Spanish scientists exploring the Antarctic seabed has detected “massive emissions” of methane, a gas with a global warming potential about 30 times greater than carbon dioxide (CO₂). Scientists aboard a ship Sarmiento de Gamboa observed methane plumes up to 700 meters long and 70 meters wide in the ocean, geologists Ricardo León and Roger Urgeles, the expedition leaders, said in a statement to EL PAÍS. These previously unknown emissions could potentially represent an environmental bomb for the planet's climate. (MANUEL ANSEDE, more at english.elpais.com)