Robert J. Callahan, age 56, of New Hampshire, formerly of Quincy MA, died peacefully, Friday, February 7, 2025, of military acquired ALS, in the comfort of his home, surrounded by his loving family.

A physics teacher who rose to become the school's head of science, Mr Lewis was credited with being largely instrumental in the school achieving some of the best science results in the county.

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Feb. 6, 2025 — A team of international researchers has developed an innovative approach to uncover the secrets of dark matter in the cosmos. They are searching for dark matter using atomic ...

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Watch a 3-minute highlight video of USD's appearances in the media for the month of March 2024.… ...