Our pick of the inaugural biennial, which opened to towering expectations

Institutions are burgeoning in the face of sanctions and currency devaluation

Interest grows in younger generation active in Tehran’s lively art scene and the Iranian diaspora

Natural history museum is more receptive than city’s art spaces

Police say it is an offence to view the works seized from Graham Ovenden

Archaeologist says climate change could result in more ancient objects resurfacing in the far North

CT scans reveal secrets of Field Museum’s Peruvian and Egyptian treasures before they are sent on the road

New banner works began as a performance, while artists plan to record 3,500 “fuckosophies” on vinyl

Sam Thorne takes the reins after joining Tate St Ives only last year

The Russian arts patron credits her microbiologist mother for an interest in science and technology

Neil MacGregor sums up the evidence in wide-ranging inquisition into the role of art

European Union climbs down over plans to ban cadmium paint pigment

Iraqi archaeologists to be trained in reconstruction of heritage sites under scheme funded by £3m government grant

€2m restoration of eight marble outer walls took 21 months

Painting’s 19-year-old subject lined up as “poster boy” for the Holburne Museum’s centenary

Public collections have missed out on the chance to permanently acquire a work by Rembrandt after license application is withdrawn

Plea comes as Boris Johnson publishes guidance for councils, planners and developers on protecting arts venues

Most works, by emerging and established artists, are valued at less than $50,000

Show comes as publication date for his catalogue raisonné is announced for next autumn

Toy maker has refused to supply materials for artist’s installation in Melbourne

Best known for circular abstract works, he lived for many years in the West and had a solo exhibition at the Guggenheim, New York