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    This year, roughly a quarter of the vast Pantanal wetland in Brazil, one of the most biodiverse places on Earth, has burned in wildfires worsened by climate change. What happens to a rich and unique biome when so much is destroyed?

     The unprecedented fires in the wetland have attracted less attention than blazes in Australia, the Western United States and the Amazon, its celebrity sibling to the north. But while the Pantanal is not a global household name, tourists in the know flock there because it is home to exceptionally high concentrations of breathtaking wildlife: Jaguars, tapirs, endangered giant otters and bright blue hyacinth macaws. Like a vast tub, the wetland swells with water during the rainy season and empties out during the dry months. Fittingly, this rhythm has a name that evokes a beating heart: the flood pulse.

     The wetland, which is larger than Greece and stretches over parts of Brazil, Paraguay and Bolivia, also offers unseen gifts to a vast swath of South America by regulating the water cycle upon which life depends. Its countless swamps, lagoons and tributaries purify water and help prevent floods and droughts. They also store untold amounts of carbon, helping to stabilize the climate.

     For centuries, ranchers have used fire to clear fields and new land. But this year, drought worsened by climate change turned the wetlands into a tinderbox and the fires raged out of control.

Catrin Einhorn, Maria Magdalena Arréllaga, Blacki Migliozzi

and Scott Reinhard. Oct. 13, 2020.