Hawaiian Crows Join Tool-Users Club The animals know how to use tools, and some even manufacture their own. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Life on Earth ‘may have come from ANOTHER PLANET’ in collision 4.4BN years ago - new studyDonald Trump demands NASA gets humans to Mars NEXT YEAR offering ‘all the money’Space weather WARNING: 'It's a matter of time' before solar flare CRIPPLES EarthWhy a Border Wall Could Mean Trouble for WildlifeTake a Number: How Long Is a Day on Saturn?Douglas Costle, Who Helped Create Environmental Agency, Dies at 79