Authorities in New Delhi shut schools, halted construction and banned nonessential trucks from entering the city after air pollution shot up to its worst level this season.

Milton grew quickly into a Category 5 storm Monday morning and is forecast to make landfall in Florida midweek.

Wildfires across the western United States and Canada have put millions of people under air quality alerts, as thousands of firefighters battle the flames.

Residents and businesses of the townsite inside Jasper National Park found out Saturday for certain whether or not they have anything to return to.

The B.C. Wildfire Service says the cold front in northern B.C. is expected to generate strong winds, thunderstorms and the potential for dry lightning in the region plagued by drought.

The McDonald Fire has grown to over 39,000 acres west of the Tanana River, with statewide fires consuming 72,000 acres; critical fire danger and smoke advisories are in effect.

Sakha is now the fourth region in the Far East where a state of emergency is currently in place due to wildfires. The other three are the Zabaykalsky and Amur regions, as well as the republic of Buryatia. Russia’s wildfire season officially began in early March. By mid-April, regions in the Far East recorded nearly twice as many fires as they had during the same period last year, with most blazes caused by human negligence.

Extreme pollen spread in Eastern Norway is causing significant discomfort for allergy sufferers due to a combination of a long winter, delayed spring, and sudden warm, dry weather.

Unseasonable blooming of goldenrod (Subphylum Angiospermae).