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Environmental groups have criticised SpaceX's impact on nearby wildlife, and say the company has increased light pollution and littered the area with debris from rocket launches.

But as Mexico City grew, urbanisation, pollution and other pressures pushed axolotls to the brink of extinction, with some estimates suggesting that there were as few as 50 left in the wild.

Current-day scientists have far more options than those 50 years ago, including satellite imagery, which is being used in Ukraine to identify fires, flooding and pollution.

Defra and Met Office air pollution forecasts, external for the week shows moderate pollution levels quite widely across the UK by Wednesday, especially for England and Wales.

The industry body Water UK told the BBC this week it would back a change to the system so that companies would no longer be responsible for monitoring their own levels of sewage pollution.