If the River Thames is London’s intestine—and it has at times performed a similar function—it has grown polyps. At Blackfriars and at six other places along the river, from Wapping in the east to ...

Twice a day, every day, the tides of the River Thames rise and fall, revealing a foreshore that, in the middle of London, has been a focus of human activity for millennia. Making use of the limited ...

The Thames estuary in southeast England—the tidal stretch of the river—once supported extensive saltmarshes, seagrass meadows and oyster beds. These shallow areas, which flood and drain with the tides ...