Over the past 20 years, the Nigerian-born Nkanga, 50, has explored the idea of rock, and by extension the land that sheds it, ...

Jenny Grumbles asked friends and neighbors for their leftover cereal boxes. Once she had enough, she created her first piece.

Their story was covered back in 2014 when they began fundraising by selling origami creations to raise money for clean water.

A selection of art from the legendary Bass House, designed by Paul Rudolph, is making their way onto the auction block ...