Nickel is an essential element in the human body, but too much is toxic. Here’s another element our planet had to provide.
Don’t walk on the grass, that “often undervalued” form of life, without looking down. It’s amazing down there.
The atomic element boron is essential for life, but how do you get it from stars to plants and animals?
As an exercise, count the number of lucky breaks that had to occur for the evolutionary story to work.
Unexpected benefits may come from a steady rain of meteoric dust onto the planet.