Letters to the Editor

Health & Medicine

Feedback

Calculating vaccines' impact, cat-induced bird death toll revised, taming wildcat genetics, and praise for The Science Life.

Genetics

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Readers discuss the names of really big numbers and whether Lamarckian evolution is making a comeback.

Life

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Readers respond to microbe counts, engineered organs and how to map the universe.

Tech

Reader favorites of 2013

For this issue, the editors selected the 25 most important and intriguing science stories of the year. But online readers seemed to point to a different bunch, showing just how subjective such an exercise can be.

Life

Feedback

Readers discuss dog origins and how important a sense of scale is in science journalism.

Science & Society

Feedback

Science policy and sleep get a deeper review.

Science & Society

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Our redesigned cover and the astronomy stories from the Oct. 19 issue get readers' reviews.

Health & Medicine

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Readers response to seeing sadness’ sunny side.

Environment

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Readers respond to "Solving soot," trade-offs of horn size for male Soay sheep and the huge galactic explosion story from 50 years ago.

Animals

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Readers respond to "Collision course" and "The tune wreckers" from our September 21 issue, plus some feedback on the new website.

Science & Society

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Readers respond to our stories 'Distracted Driving' and 'Ratio of a good life exposed as ‘nonsense’'

Life

Letters to the editor

Sleepless on a schedule, Edison's rubbery discovery and monogamy not just for men.