Grimy windows could be harbouring toxic pollutants

Dirty windows can harbor potentially harmful pollutants under protective films of fatty acids from cooking emissions—and these can hang around over long periods of time.

Rare 'red sprites' seen from ESO's La Silla Observatory in Chile

This new image taken of the skies above Chile's Atacama Desert near the European Southern Observatory's (ESO) La Silla Observatory, shows bright red streaks in the sky known as red sprites. Red sprites are large-scale electrical ...

Urban density strongly correlates with house sparrow health

House sparrows (Passer domesticus) have adapted to urban environments, which are changing and growing faster than ever before. A range of both biotic and abiotic factors—including habitat fragmentation, changing food availability, ...

The social transmission of stress in animal collectives

Stress is a widespread phenomenon that occurs when, for example, humans feel threatened or overwhelmed, have too much work or are in imminent danger. We communicate to others that we are stressed through our behavior and ...

Urban lighting needs to consider migrating birds, study suggests

University of Manitoba researchers have published a paper that challenges the way we think about airspace. By equipping some migratory birds with a GPS backpack, the biologists provided new and crucial data to a burgeoning ...

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