“The faster omicron spreads, the more opportunities there are for mutation, potentially leading to more variants,” Leonardo Martinez, an infectious disease epidemiologist at Boston University, said.
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Authorities said a man took hostages Saturday during services at a Texas synagogue where the suspect could be heard ranting in a livestream and demanding the release of a Pakistani neuroscientist who was convicted of trying to kill U.S. Army officers in Afghanistan.
An undersea volcano erupted near the Pacific nation of Tonga on Saturday, and tsunami advisories were issued for Hawaii, Alaska and the U.S. Pacific coast.