Police break silence after ‘skeletal remains' discovered miles from Nancy Guthrie's home

Nancy Guthrie, 84-year-old mother of Today show host Savannah Guthrie, was taken from her Arizona home on February 1.
Nanowerk

Polymers that crawl like worms without being told where to go

Densely packed polymer chains can spontaneously start moving in one direction, even without being pushed, a finding that could explain DNA behavior and inspire new smart materials.

Polymers that crawl like worms: How materials can develop direction without being told where to go

Researchers at the University of Vienna have uncovered a surprising phenomenon: polymer chains with segments that simply ...