UN Deputy Secretary General Jan Eliasson claims that CO2 has brought about "more vehement expressions from nature"

World faces mounting damage from disasters - Features - Al Jazeera English

"There's now rather convincing evidence [like what, specifically?] that climate change has brought about, if not more frequent, at least more vehement expressions from nature, and that we should be prepared for this," UN Deputy Secretary General Jan Eliasson said at the conference.