This Week in Science

In Science this week, researchers from the University of New Mexico and Aarhus University present data showing that bird species with hemoglobin suited for high altitudes evolved this trait independently. The team analyzed genetic mutations in the hemoglobin of 28 species of birds that live in either high or low altitudes. They found that while the high-flying birds all had mutations resulting in hemoglobin with high affinity for oxygen, the molecular mechanisms underlying these mutations varied.

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While gene therapies may have high price tags, they could be cheaper than the cost of managing disease, according to MIT's Technology Review.

Researchers are looking for markers that indicate which cancer patients may respond to immunotherapies, the Associated Press writes.

In Nature this week: paternal age associated with de novo mutations in children, and more.

Nature News writes that researchers are still wrangling over the role of the p-value.