Warning to millions as lung-penetrating toxins sweep across 14 US states... with Detroit's air ranked the worst on Earth

More from Science & Technology

• Mutant raccoon roaming the streets of Seattle strikes fear in the heart of unsuspecting residents

• Major 7.4 magnitude earthquake strikes off the coast of Mexico sparking tsunami warning

• Missing nuclear scientist's phones were wiped before she vanished. Then chilling clues cops missed were found by her body

• Sinister reason toxic haze smells of burning PLASTIC: Experts warn of deadly health risks as chemical-filled wildfire smoke blankets US

• Cancer-linked chemicals pumped into US neighborhoods by Elon Musk's 'illegal' data center, lawsuit claims

• Toxic air crisis grips US as three major cities rank as most dangerous to breathe worldwide

• Who will win the World Cup? Supercomputer predicts the winner of the final - as scientists say we're in for a tight game

• Speeding doesn't save time! Study reveals driving too fast shaves just 54 seconds off your day on average

• Debunking the myth of the male warrior: Ancient Egyptian PRINCESSES were skilled hunters with bulging muscles, study finds

• As if the heatwave wasn't bad enough! Brits are told to brace for a POLLEN bomb over the next four days

• Rocky 'super-Earth' 48 light-years away could be our best chance of finding life, scientists say

• 'Experimental explosion' rocks Florida coast as mysterious earthquake alert sparks alarm

• A dismal glimpse into the future: Scientists give their chilling predictions for life in the 2100s

• 'Tsunami-like' flood wave threatens Texas nears historic levels one year after Camp Mystic disaster: Seek higher ground NOW

• Earthquake rocks Yellowstone National Park near supervolcano feared to be overdue for eruption

• Future of warfare? Creepy drone spins so fast it disappears before your eyes - and could be used to sneak up on the enemy

• Saharan dust is at an all-time high over Britain - increasing the risk 'blood rain', study warns

• Meet the REAL Pirates of the Caribbean: Incredible reconstruction reveals the infamous 'Piratetown' of Nassau in its heyday - as well as the buccaneers who lived there

• Is your avocado oil FAKE? Study warns 89% of foods that claim to be made with the trendy oil are bulked out with cheap alternatives

• Subtle signs in your fingernails that can signal dangerous 'silent' health complications