But e-bikes containing lithium-ion batteries are a newer challenge. "When a battery fails, it doesn't necessarily ignite, it will often produce some off-gases," says Stephen Welch, senior lecturer at the University of Edinburgh's Fire Research Centre. "Those off-gases are toxic and flammable. If they accumulate, you can have an explosion risk."
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Both Aldi and Lidl are a growing presence in the highly competitive British supermarket field. Aldi said in January that it plans to open 40 new stores in the UK this year. It currently employs 45,000 people.
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