Scientists have now discovered that the roots below the North American continent seem to be dripping rock blobs. The findings have been reported in Nature Geoscience. "We made the observation that ...

Get Instant Summarized Text (Gist) The underside of the North American continent is experiencing "cratonic thinning," where blobs of rock are dripping away. This phenomenon is linked to the ...

They are controlled by a combination of man and machine: On a pedestal in the center of the gallery, two small, white blobs send electrical signals to the mallets, prompting them to strike.