Detail of Casapueblo, created by Uruguayan artist Carlos Páez Vilaró who passed away (photograph by Juan José Richards Echeverría, via Flickr)

Detail of Casapueblo, created by Uruguayan artist Carlos Páez Vilaró who passed away (photograph by Juan José Richards Echeverría, via Flickr)

Art Movements is a weekly collection of news, developments, and stirrings in the art world.

A painting in the Guggenheim’s collection attributed to Fernand Léger was confirmed to be a forgery through standard radioactive dating techniques relying on residue from Cold War nuclear bombs. It had been long in storage due to doubts regarding its origins.

Two Germans who vandalized the Great Pyramid of Giza in an attempt to prove a conspiracy theory that it was constructed by people from Atlantis are up against possible criminal charges.

Activist investor Dan Loeb, who has been leading a charge against Sotheby’s, is nominating himself and two others to the Sotheby’s board, Reuters has reported. In a post-earnings call yesterday, Sotheby’s also announced a number of business changes that have been seen as responsive to some of the hedge fund manager’s demands.

The case of a stolen painting by Jan Baptist Lambrechts that vanished from the Mead Art Museum at Amherst in 1975 has been reopened by the FBI.

The Alexander Calder sculpture that’s been on loan to Gramercy Park since 2011 is off to Amsterdam where its 26-foot height of colorful metal will be part of an exhibition of 19 Calders at the Rijksmuseum. There are plans to have it either return after the end of its showing in the Netherlands in October, or have another Calder piece substituted in its place in the park.

Two rare 16th century Korean paintings were found by the Honolulu Museum of Art in their collections, part of thousands of uncatalogued pieces acquired in 2003 from art collector Richard Lane.

Extell Tower rendering (courtesy Adrian Smith + Gordon Gill Architecture)

A suit by over 100 members of the Art Students League of New York has been filed against the plan to build the 1,435-foot Extell skyscraper that cantilevers over their 57th Street headquarters. This follows the approval of the sale of air and cantilever rights by a majority of members earlier this month.

WORK Architecture Company was chosen by Eyebeam to design the art and technology organization’s future Brooklyn home on Lafayette Avenue and Ashland Place. Eyebeam is departing Chelsea, where its building was sold this month, and this summer they’ll be relocating to an interim Brooklyn location until construction on the new facility is complete in 2016.

The New Museum’s incubator — an initiative starting this summer with workspace and professional development programs focused on 12-month residencies — will be called New Inc.

Former chief executive of Time Inc., Ann S. Moore, is opening a gallery next month in Chelsea.

Museum of Fine Arts, Boston director Malcolm Rogers announced his plans to retire after two decades at the museum.

The Indianapolis Museum of Art named Tricia Y. Paik as their new Curator of Contemporary Art. Paik will be departing her current position as associate curator of modern and contemporary art at the Saint Louis Art Museum.

Joseph Neubauer, ARAMARK Board Chairman, was elected as the Chairman of the Barnes Foundation Board of Trustees.

San Antonio Museum of Art contemporary art curator David Rubin has stepped down.

Ghent’s SMAK art museum founder Jan Hoet, who once boxed against an artist and was the director of Documenta IX, died at the age of 77.

Uruguayan artist Carlos Páez Vilaró, who created murals around the world as well as a giant “living sculpture” hotel known as Casapueblo, died at the age of 90.

A Luther College student found ancient papyrus texts with Greek writing in the school’s basement archive.

The Royal Museum for Central Africa in Belgium is undergoing a $90 million renovation that is aiming to update the extremely colonial museum and focus more on science and research.

The 2014 Infinity Awards for achievements in photography were announced by the International Center of Photography, including a lifetime achievement award for Jürgen Schadeberg, an art award for James Welling, a fashion award for Steven Klein, a photojournalism award for Stephanie Sinclair and Jessica Dimmock, a publication award for Adam Broomberg and Oliver Chanarin’s Holy Bible, and a young photographer award for Samuel A. James. The awardees will be honored at a gala on April 28.

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Allison Meier

Allison C. Meier is a former staff writer for Hyperallergic. Originally from Oklahoma, she has been covering visual culture and overlooked history for print...