The New Yorker, we learned about the Art Documentation Project, a collaboration between the Menil Collection, the Whitney Museum, and the Center for the Technical Study of Modern Art at Harvard. The Menil's Chief Conservator Carol Mancusi-Ungaro got the idea to try and forgo future conservation mysteries by talking with artists about what in the world they did to produce their work and how to best preserve it. The point is that the videos are available here and they are enormously enlightening.
So there. Now you too can learn how to best preserve that Jasper Johns encaustic hanging in your hallway, and that Brice Marden in your foyer.