All content except for the footer blocks are editable by users with the "Homepage editor" role (Alison Rockwell, Janine Aquino and Brooks Snyder).
The main content of the homepage is editable here: https://www.eol.ucar.edu/node/5459/edit
Editable here: https://www.eol.ucar.edu/node/5460/edit
Editable here: https://www.eol.ucar.edu/admin/structure/block/manage/block/2/configure
Editable here: https://www.eol.ucar.edu/content/opportunities
These footer block are only editable by site administrators. If a change needs to be made to one of them please contact Alison Rockwell