New Delhi's air quality was at its worst this season on Thursday, as winds heavy with toxic smoke from polluting vehicles and smouldering crop waste fires in neighbouring states lingered low over the ...

Air quality in India's capital, New Delhi, deteriorated sharply on Tuesday as wind died down just as the burning of crop waste in fields sent smoke billowing across the north of the country.

The appearance of oxygen in Earth's atmosphere was a turning point in the history of our planet, forever transforming the environment and setting the stage for complex life. This event, known as the ...

A study by Rutgers ecologist Myla Aronson and colleagues has found "overwhelming" evidence that increasing biodiversity in ...