That’s only one problem. Your immune system also has an adaptive system of specialized immune cells and antibodies that attack and destroy invading microbes. This system remembers what those intruders ...
Columnist Rabbi Bruce D. Forman discusses the importance of the Jewish holiday of Tu B’Shvat, which falls on Feb. 1, 2026.
On a talus-strewn slope in eastern California’s mountains, a gnarled tree twists toward the sky. It is Methuselah, a Great ...
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