Tired angels and giant sloths

Here's the beginning of my new painting, Tired Angel. Just a drawing on canvas so far but we shall see how it develops.
In the meantime, I've been reading a book called The World Without Us, by Alan Weisman. This is a pretty depressing, yet compelling story of what we have done to the earth and how long it will take, if ever, to recover or simply 'Digest' the mess we have made. It's keeping me up at nights. So one day last week I went to the Museum of Natural History to see all the giant mammals that are now extinct in North America. I was sorry to discover that the museum has 'modernized', meaning it plays to the lowest common denominator (but best paying customer): Kids.
The large, dull Victorian style hall that was crammed with skeltons of extinct mammals is gone, replaced with a whole floor that leads from dinosaurs to those mammals. Lots of interactive stuff but not enough actual animals! OK, I confess, I hadn't visited that old room with all the cases in maybe 20 years. Still, when I actually Wanted to visit it, it was gone. The new approach is interesting but controlling. The museum is pushing the information it wants you to have. But what if you have other questions?
ANYway, I did find the giant sloths. Here's one. They were maybe/probably wiped out by man arriving in the new world. They must have been quite tastyl