Actor Tina Louise is 91.

Musician Sheryl Crow is 63.

Actor Jennifer Aniston is 56.

Actor Damian Lewis is 54.

Surfer Kelly Slater is 53.

Musician D’Angelo is 51.

Singer-actor Brandy is 46.

Singer Kelly Rowland is 44.

Actor Natalie Dormer is 43.

Actor Taylor Lautner is 33.

Singer-songwriter Khalid is 27.

All carbon on Earth stays at the same amount, cycling in oceans, the atmosphere, rocks and organisms.