Civilians help with rescues in Porto Alegre, Rio Grande do Sul, in the floods that hit the state. Photo by Alex Rocha/PMPA, used with permission Rio Grande do Sul, the southernmost state of Brazil, is going through the worst climate disaster in its history. From April 28 onward, a major part of its territory, about the size of the United Kingdom, has been submerged underwater. The heavy rains soon transformed into violent floods, impacting over 1.4 million people, with at least 100 people confirmed dead, according to reports published May 8. Entering its sixth day of flooding, the state capita…