Sydney's air quality plummeted on Tuesday as a thick blanket of bushfire smoke clogged the city.
The haze has left the city as the 14th worst in the world on the World Air Quality Index.
A warning for severe fire danger has been issued, as temperatures soared to 37 degrees Celsius in the city's west.
Residents have also been advised to stay indoors, with the New South Wales Ambulance service emphasising that those with respiratory issues should "take extra care".
Indian opposition marches in protest seeking resignation of election chief
Dozens of Indian opposition lawmakers began a march on Tuesday seeking the resignation of the election chief over a controversial revision of voter lists, as hundreds of security personnel kept vigil in the heart of the Indian capital and barricades were thrown up.
Cornell students stage rally in support of 'Jane Doe'
Cornell University students have staged a mass rally on Monday, voicing solidarity with a classmate whose gang-abuse allegations have ignited a national uproar and demanding that the Ivy League school take firmer action against sexual abuse on campus.
Dozens quarantined in Siberia after plague institute lab worker dies
A laboratory worker at a plague research institute in Siberia has fallen ill and died in undisclosed circumstances, prompting authorities to quarantine dozens of people and the head of Russia's health watchdog to fly to the Irkutsk region.
US, German scientists win Nobel medicine prize for work on light and brain
American Karl Deisseroth and Germans Peter Hegemann and Georg Nagel won the 2026 Nobel Prize in Physiology or Medicine on Monday for developing optogenetics, a technique that uses light to control individual nerve cells in the brain.
Nigeria military aircraft crashes with 32 aboard
A Nigerian military plane flying from Benin City to Lagos crashed on Monday in southwestern Ondo state, killing 25 passengers and seven crew members.
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