Lord Coe said to the London Assembly: "We did everything possible to fill all the venues". Lord Coe also defended Olympic ticket allocation, saying 76% were in the hands of UK people.
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Experts also believe Londoners will inhabit ultra-deep basements and buildings with their own complex micro-climates.
Dry and cool night with clear spells tonight. Lows of 3C.
As Tibetan Buddhist communities celebrate Buddha's birthday, Lydia Polzer explains the true meaning of the special event.