Happy Mothers' Day!
(That's my mother in the photo.)
First, in honor of the day, check out these photos of animal mothers and babies at National Geographic! See them here.
Then, read this interesting article about sleep, also at National Geographic. There's even a bonus test you can take to see whether you are one of the many who can't get enough sleep. The article talks about sleep, insomnia, sleep patterns in other cultures, and more. Read it here.