The London Underground wants to harness heat accumulated to help warm hundreds of homes. The project, which is the first of its kind in Europe, could even help reduce spiralling energy bills.
Dan Hewitt reports:
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The 47-year-old man died shortly after 3pm on Tuesday.
Specialist explosive detection dogs searched through the town examining letter boxes and phone booths for signs of potential devices.
Temperatures reached 29.1C in St James's Park, central London.