I'm pretty sure it's Time.
Literary analysis encourages students to branch beyond their own experiences and beliefs, and in doing so it allows students to build empathy. Empathy is the ability to consider someone else's feelings and thoughts in a situation. As you can imagine, empathy is important in relationships, job settings, and beyond.
The moon experiences many changes throughout the story.
At first, the moon is a shimmering ivory figure.
She then becomes blue, veiny, and wrinkled.
Later, she starts to fade, and become see-through, and her eyes turn indigo.
She ends the story as a sparkly silver pile of embers.
The problem is that cows are getting sick due to a disease that appeared in England in 1986. The solution that they went with is to get sick cows off the food supply