When artist Sarah Ezekiel was diagnosed with the crippling condition Motor Neurone Disease, she thought that was the end of her painting career.
Sarah is paralysed from the neck down, unable to use her hands.
But because of new technology that tracks her eye movements, Sarah has been painting once again.
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Thousands of passengers now face delays, with Southeastern trains warning "all services" would be affected.
Paramedics attended a scene in Willesden, north-west London, on Monday afternoon where they found the teenager with stab wounds.
At least five people have suffered minor injuries but the cause of the blast is still unknown.