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PhysicsWith Steven Weinberg’s death, physics loses a titan
The Nobel laureate advanced the theory of particles and forces, and wrote insightfully for a wider public.
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Health & MedicineWhat experts know so far about COVID-19 boosters for immunocompromised people
Some immunocompromised people remain at risk for severe COVID-19 despite being vaccinated. Studies hint that an additional vaccine dose might help.
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SpaceHow do scientists calculate the age of a star?
There are a few different methods to determine the age of a star, but none are perfect.
By Lisa Grossman and Helen Thompson -
AnthropologyA partial skeleton reveals the world’s oldest known shark attack
An ancient shark bite victim died quickly, before his body was recovered and buried, a new study finds.