If the scheme emanated from the UK, why are the US and the EU cancelling flights into Heathrow??

This should not be so addictive. Block falling streams of sand, salt, water and oil by building walls, planting plants, sowing fire, etc. I was clearly among that class of little boys who loved building dams across little streams in the woods or rivulets of draining water in the streets after rainstorms; this is the net version. File in the major net timewasters dept.