Climate in Crisis: Environmental Change in the Indigenous Americas February 14, 2020–June 20, 2021 Alaska Native artist. Engraved Whale Tooth, late 19th century. Sperm whale tooth, black ash or graphite, oil, 61/2 × 3 × 2 in. (16.5 × 7.6 × 5.1 cm). Brooklyn Museum; Gift of Robert B. Woodward, 20.895. Creative Commons-BY. (Photo: Brooklyn Museum) Here are some questions visitors asked us during their visit to this exhibition. On your next visit, use our app to ask your own questions, get info, and share insights by texting with our team of knowledgeable and friendly experts.