Global mean sea levels have risen faster in the 20th century than in any prior century over the past 3,000 years.
New changes to the constitution mean presidential polls are likely to be scrapped, leaving lawmakers as the kingmakers.
Those opposed to the changes fear they could allow further extensions to President Faure Gnassingbe’s rule.
Opposition figures accuse President Faure Gnassingbe of changing the rules so he can maintain his grip on power.