Estimates of narwhals summering in Canadian Arctic waters have improved because of new techniques. Previous estimates had placed populations between 20,000 and 30,000. New estimates increase that ...

Results for the survey are based face-to-face interviews conducted under the direction of Princeton Survey Research Associates International. All surveys are based on national samples except Pakistan, ...

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A study led by Stanford University scientists found that conventional surveying techniques have not only led to some Amazon animal populations being underestimated, but have even missed entire species ...

Survey sampling and estimation methods form the cornerstone of modern statistical inference, underpinning research across the social, medical, and natural sciences. At their heart, these methods ...

This study looks at how national public opinion polling in the United States changed from 2000 to 2022. It focuses on two aspects: the sample source(s) – that is, where the survey takers came from – ...

Obtaining reliable information on species distributions is often the first step in conservation. Distribution information can be used to focus survey efforts to estimate population size and examine ...

A new report titled “Pulse Survey Report,” sponsored by Seismic, points to rising demand for quick checks on worker and ...

Have you wondered what amphibians are living in and around your local pond or other waterbodies? You might be surprised by the frogs, toads and newts that you can find. If you'd like to learn how to ...