Our knowledge of what animals do when humans aren’t around has steadily increased over the last 50 years. For example, we know now that animals use tools in their daily lives. Chimps use twigs to fish for termites; sea otters break open shellfish on rocks they selected; octopi carry coconut shell halves to later use as shelters. But the latest discovery has taken this assessment to new heights—literally. Read more: https://www.smithsonianmag.com/science-nature/why-science-takes-so-long…