Regulators extended the life of two of the oldest US reactors in Miami. Millions of people in the area are now vulnerable

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A decision by regulators to extend the life of two of the oldest reactors in the US decades beyond their original permits has elevated the risk of a nuclear disaster in heavily populated south Florida, environmental groups are warning.

The Miami Waterkeeper says the ageing Turkey Point facility in south Miami-Dade county, which was built in 1967 and generates power for a metropolitan area covering about 3 million people, is especially vulnerable to flooding and excessive heat from the climate emergency, in part because of its low-lying position and coastal exposure to a major hurricane.