expelled a decades-long Labour activist over a minor excuse — but really, over resisting his subjection of the party.

Here's what he has to say about it.

Swifts, remarkable birds that fly for months without landing, are running out of nest sites as old buildings are renovated. Hollow "swift bricks" built into new buildings provide them with new nest sites.

The culture in England around cricket is jam-packed with bigotry.

Implementing low-emission-zones in a city tends to produce small but significant decreases in heart and lung disease.

I am in favor of limiting the use of high-pollution vehicles, but it must be implemented in a way that doesn't track where each car goes. Tracking people's movements is the foundation for tyranny and repression.

*Scientists ponder if climate has entered a new erratic era.*