Mapping international drug use through the world's largest wastewater study

A seven-year project monitoring illicit drug use in 37 countries via wastewater samples shows that cocaine use was skyrocketing in Europe in 2017 and Australia had a serious problem with methamphetamine.

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Survey completeness of a global citizen-science database of bird occurrence

There are many shortfalls in knowledge of the world's biodiversity, and one of the most basic is the lack of knowledge about where species occur geographically. This deficiency has broad ramifications for research and conservation. This study suggests the development of citizen science programs to collect data by volunteers has the potential to reduce this shortfall.

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Reading the past like an open book: Researchers use text to measure 200 years of happiness

Using innovative new methods researchers have built a new index that uses data from books and newspaper to track levels of national happiness from 1820. Their research could help governments to make better decisions about policy priorities.

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Grouping 'smart cities' into types may help aspiring city planners find a path

A comparative analysis of 'smart cities' worldwide reveals four distinct types, according to researchers. The categories may help city planners to identify and emulate models that are close to their own socio-economic circumstances and policy aspirations.

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Promoting earth's legacy delivers local economic benefits

For iconic landscapes such as Grand Canyon or the Appalachian Mountains, geological features are an integral part of their appeal. Yet despite the seeming permanence of cliffs, caves, fossils, and other geological highlights, these features are surprisingly vulnerable to damage or destruction.

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Americans would rather drive themselves than have an autonomous vehicle drive them

Are you willing to ride in a driverless car? Researchers studied how Americans' perceived cost of commute time changes depending on who's driving.

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