The bioscience startup has attracted billions in investment – and a flurry of criticism, but founder tells the Guardian plans to bring back the woolly mammoth will not be derailed

Death and taxes are supposed to be the things we can depend on in this life. But in 2025, the American entrepreneur Ben Lamm sold much of the world on the idea that death did not, after all, need to be for ever.

This was the year the billionaire’s genetics startup, Colossal Biosciences, claimed it had resurrected the dire wolf, an animal that disappeared at the end of the last ice age, by tweaking the DNA of grey wolves. According to the company, it had also edged closer to bringing the woolly mammoth back from the dead, with the creation of genetically engineered “woolly mice”.

When developers began circling Espíritu Santo island in the 1990s, a private conservation effort saw them off. But today the Unesco site faces a new threat: mass tourism

On a clear day over the Sea of Cortez, Espíritu Santo looks untouchable. Turquoise water laps at the shores of the island’s rocky coves; whale sharks cruise past snorkellers; seabirds caw over ancient cliffs. The pristine island and its Unesco-protected surroundings – informally called “Mexico’s Galápagos” – are a cocoon of biodiversity.

Yet an increase in tourist numbers has led to growing unease among the island’s longstanding stewards, as environmentalists report a decline in the area’s marine life and call for stricter regulations.