Hurricane Iota is 13th hurricane of record-breaking Atlantic season

• 30th named storm threatens Nicaragua and Honduras
• Scientists link record-breaking season to climate crisis

Iota became the 13th hurricane of the Atlantic season early on Sunday, threatening to bring another dangerous system to Nicaragua and Honduras - both recently battered by a category 4 hurricane, Eta.

Iota was already a record-breaking system, the 30th named storm of this year's Atlantic hurricane season. Such activity has focused attention on climate change, which scientists say is causing wetter, stronger and more destructive storms.