Have you made a piece of work, walking or otherwise, in response to the Coronavirus pandemic? As the world suddenly changed a lot of us found our art practice was a vital way to make sense of it all and the National Academy of Sciences in the USA is looking to archive this hopefully unique moment. You just need to fill out a short form with a link to your work and they'll do the rest.
I'd encourage people to take their criteria as a broad invitation, not a narrow "proper artists only" filter. Creative responses that seem small, indulgent or insignificant are often the most interesting in a situation like this, coming as they do from the gut.