The International Museum of Art and Science in McAllen adds another wonder to its sculpture park, already home to the largest (replica) Olmec head outside of Mexico: a 124-foot, 7-ton wind turbine blade will descend (presumably from the sky, by helicopter, but the press release doesn’t specify) to its permanent spot outside the museum at 1pm on Friday, June 25. IMAS is asking rubberneckers to be on time, as it won’t take long.