Toxic air triggers 'Code Orange' alert for thousands

More from Science & Technology

• The $80 billion mission to save the Doomsday Glacier: Scientists reveal wacky plan to build a 50-mile WALL around Thwaites to stop it collapsing and raising global sea levels by 2ft

• Trump administration shoots down party balloon with laser after mistaking it for cartel drone in El Paso airspace chaos

• Have YOU got the 'green bubble ick'? iPhone users say they're immediately turned off when they realise a potential partner uses an Android

• Tech giant responds after inadvertently encouraging children to visit Epstein Island

• You think this is bad? British winters will get even WETTER thanks to climate change, scientists warn

• Prehistoric discovery in Oregon cave older than Egypt's Great Pyramid rewrites human history

• Electric cars deliver 'no proven carbon savings' in the UK, scientists warn in 'sanity check' study

• Apple is rumoured to be launching a brand new iPhone 'imminently' - here's what we expect to see

• Blueberries unpicked: The tiny superfruit that can make a BIG impact on your gut, brain and heart health

• Forget 'The One': Most people fall in love TWICE in their lifetime, study finds

• Mark Zuckerberg buys new $150 million Miami mansion after becoming latest tech billionaire to shun California

• Beach invaded by bizarre Stranger Things-looking one-footed creatures

• Scientists issue an urgent warning over HAIR EXTENSIONS - as analysis reveals they contain dozens of cancer-causing chemicals

• Revealed: The towns with the most miserable weather in Britain where the rain has not stopped this year - so, do you live in one of them?

• Humans fart TWICE as much as we thought: Study using smart underwear confirms the average person passes wind 32 times a day

• Truth about NASA's 'missing' moon tapes revealed after 57 years

• Long-lost ancient Egyptian technology rewrites the dawn of civilization

• Urgent warning to pet owners as study reveals cats and dogs are quietly spreading an invasive WORM species through Europe

• 'Space junk' may cause flight delays as more and more satellites circle Earth

• The Apple Car lives on! Ferrari's first electric vehicle, Luce, has been designed by ex-iPhone design boss, Sir Jony Ive - and it has several of his signature features