They are asking for volunteers to help identify and archive sites and content, while they are still online. You do not have to read Ukrainian or Russian to help.
And Volunteer to help put things in the internet archive, or use more advanced archiving software: https://lnkd.in/eSYj_M-S
Please do share with colleagues, and your students, and your networks. It's one concrete thing we can do to help Ukraine, from afar.
You may also be interested in following the work of the Ukrainian Library Association, who are coordinating a National Digital Library in Ukraine: https://lnkd.in/eTBvpsTU