Our pick of the latest gifts and purchases to enter institutional collections worldwide

The 70ft-high public art commission expresses "humanity's yearning for the infinite"

The World Weather Network, though variable in its scientific rigour, aims to bring “different weather worlds” into dialogue, as one organiser put it

National Capital Planning Commission welcomes revisions to Hiroshi Sugimoto’s proposal for an expanded reflecting pool and stacked stone walls

The artist’s designs for the sunken sculpture park creating a more inviting space for visitors coming from the National Mall

Critics and city planners question changes to a historic reflecting pool and addition of stacked stone walls in a Modernist environment, while the artist Hiroshi Sugimoto defends his designs but says he is open to negotiating