This year’s sculpture exhibition in Regent’s Park London is brought forward to the summer, many weeks before the Frieze Art show. As usual, some of the exhibits have a scientific theme.

T. Kuwata’s ceramic shapes look like excrement or blue slime on golden or pink phalluses.

The aluminium Silver Moon by U. Rondinone reflects the vegetation and human onlookers around it. But it is a dead tree with broken branches. Without life it has a ghostliness in the late afternoon sun.

M Barcelo’s elephant has an unnatural balance and a rough texture. It is 8m high and wants to penetrate the earth.

A headless figure beside the wheel is by M. Abakanowicz, compares fragile organic form with heavy machinery. That is the painful business of war and of working the land.