Potentially explosive methane gas level detected at Osaka Expo venue
A potentially explosive level of methane gas was detected at the World Exposition venue in Osaka less than a week before the event's opening on Sunday, prompting the…
Tomas Kauer - News Moderator 
A potentially explosive level of methane gas was detected at the World Exposition venue in Osaka less than a week before the event's opening on Sunday, prompting the…
