A train in New Jersey has derailed causing hazardous chemicals to spill, including vinyl chloride.
Short-term exposure to high amounts of that chemical can lead to dizziness, drowsiness and headaches, according to the Environmental Protection Agency.
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The prominent Brexiteer says leaving the bloc will offer a "once in a lifetime" opportunity to set reform environment policies.
The Severn Crossing tolls will be abolished next year, the government has said. Currently cars are charged £6.70 for a return journey.
An Australian bride-to-be shot dead by a US police officer after dialling 911 "should not" have been killed, authorities have admitted.