Beneath it, stretching all the way to the feet of Ubirr, lies a huge and perfectly flat, lettuce-green flood plain, through which the lazy curves of the East Alligator River meander.

BBC: Australia��s Top End

Dark green leafy vegetables like kale, romaine lettuce and spinach, which are good sources of vitamin E, seem to be particularly important in protecting your brain.

CNN: How does nutrition affect dementia?

In particular, it is important to regularly consume dark green leafy vegetables including spinach, romaine lettuce, or kale which are good sources of vitamin K, E, and C, as well as beta-carotene rich, orange-colored vegetables such as carrots, sweet potatoes, and squash.

CNN: Is it OK to eat the same foods every day?