I think you never stop learning.

Joseph Bazalgette created a sewer system which he originally sized for London's needs of the time - he then doubled it to anticipate the future beyond. These are the qualities that I admire.

I hope that any expansion of London will learn from the planning examples of some of its most desirable areas such as Chelsea, Notting Hill, Belgravia and Mayfair. All are characterised by high density and a generosity of green spaces.

I hope that any expansion of London will learn from the planning examples of some of its most desirable areas such as Chelsea, Notting Hill, Belgravia and Mayfair. All are characterised by high density and a generosity of green spaces. They are all pedestrian-friendly with shops, entertainment, restaurants and pubs within easy walking distance.

Ever since we achieved a breakthrough in the area of recombinant DNA in 1973, left-wing nuts and environmental kooks have been screaming that we will create some kind of Frankenstein bug or Andromeda Strain that will destroy us all.

My efforts in Congress are guided by the belief that environmental preservation and restoration are a critical part of the legacy we leave to future generations.

I never thought I would hear Labour and Scottish Nationalist ministers in both Westminster and Holyrood publicly recognise the environmental benefits of good grouse moor management.

Building power plants would do more to lift people out of poverty than the Green Climate Fund ever will.