Patches of frozen ground, or permafrost, exist atop the Mauna Kea volcano on the generally warm island of Hawaii. You’ll also find ice caves on the sides of nearby Mauna Loa. These rare microclimates are similar to those in parts of Mars where icy patches form in relatively warm places. (Alexey Kamenskiy / Shutterstock)
Kids Discover For over 25 years, we’ve been creating beautifully crafted nonfiction products for kids. With a specialty in science and social studies, our team of talented writers, award-winning designers and illustrators, and subject-experts from leading institutions is committed to a single mission: to get children excited about reading and learning.