The chief science advisor of A Neighbor's Choice, Dr. Weiping Yu, returns with another brand new segment of Science and U. The physicist comments on his recent interaction with Michio Kaku and reviews Kaku's string theory. Is there any evidence for string theory? Also in this segment, Dr. Yu comments on reports of a bio-weapon with microwave technology that is currently being developed and is also rumored to be already in use by countries like Russia and China.

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