Colombia’s president says devastating flooding forced him to cancel his scheduled trip to the United Nations climate change conference in Mexico this week-even though global warming itself could be causing the disaster his country faces.† CNN reported that, at least 194 people were killed and 248 injured after torrential rains in Colombia that have affected nearly 1.6 million people, according to the country’s interior ministry. The downpours have caused landslides and overflowing rivers, destroying at least 2,040 houses and damaging nearly 270,000 more nationwide, the ministry said.