Scholars are studying an ancient scroll that has been virtually unrolled 2,000 years after it was burned to a crisp during the eruption of Italy’s Mount Vesuvius.

A breakthrough out of the Vesuvius Challenge builds on past efforts to virtually “unroll” fragile papyrus documents carbonized into hardened lumps by the volcanic blast.

This week, explore decoded words from charred ancient scrolls, meet heroic frog daddies, see Grand Canyon-size lunar features, and more.