Ffion Hague, wife of Foreign Secretary William, has completed her abseil down The Shard building in London.
She has told reporters she is glad it is over. She admits she would not necessarily want to do it again but says it was exhilarating.
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The 100 leaders did not agree on concrete proposals, but the meeting has raised hopes for concrete international agreement next December.
The speech was OK, passionate at times and certainly well received, but did not display the passion of past speeches.
The brother-in-law of a British hostage being held by Islamic State militants in Syria, says he is scared by US airstrikes in the country.