they came from england, france, spain, and from across america: calder and moore, arp, caro, miro, motherll, rosati, their works to be placed in the grand spaces. ( orchestral music ) this building is a gift given to the natn by pl mellon, ailsa mellon bruce, and the andrew w. mellon foundation, but it is more than that. it is a statement, as one critic wrote, "of perseverance and excellence, against which all buildings and builders must now be measured." here, kitty, kitty! here, kitty, kitty, kitty! here, kitty, kty! you'd think it would be ea to tell which kids had trouble with their eyesight. [ thud ] but that's not always the case. even though one in four children may have a vision problem, eye doctors tell us the symptoms aren't always so obvious. we do know that 80% of all childhood learning is visual. and without good vision, kids can have trouble learning to read. [ girls screaming ] ow! and may fall behind in school. for clues on how to spot the real-life signs of childhood vision problems and what parents can do, visit checkyearly.com. a public service message from the vision cou