Sea otters are highly intelligent marine mammals known for their unique survival skills and playful nature. One of their most fascinating behaviors is using rocks as tools to open hard-shelled prey like clams, crabs, and mussels. Many sea otters even keep a preferred rock in a special skin pocket, u
Trump's Science Budget Isn't the Sweet Meteor of Death
J Scott Turner，RCScience 特朗普政府已发布其
Bumblebees use tools to solve complex problems—despite not being trained to do so
大黄蜂似乎能够针对新问题提出创造性的解决方案来获得甜蜜的奖励——它们的策略包括作弊
