Video: A somber anniversary: 100 years of chemical weapons

Wednesday, April 22 large-scale use of chemical weapons in warfare. Some of the best minds in chemistry at that time, including a Nobel Prize winner, used their knowledge of science to build humanity's new weapons of mass ...

Topological phase detected in spin chains

In some materials, there are phases between which a transition is not possible because they are protected by a certain form of symmetry. Physicists refer to these as topological phases. One example of this is the Haldane ...

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