This Saturday Sophie Ellis-Bextor will be unveiling WWF's giant light bulb for the big switch off ready for Earth Hour. Charity WWF first launched Earth Hour in Australia in 2007 and since then it has become the world's largest environment campaign.
The campaign encourages major landmarks across the world to switch off their lights for one hour. Last year's even saw 7000 towns and cities across 154 countries take part and this year Sophie will lead the 8.30pm swithc off with a candle lit performance at the South Bank centre
Malala Yousafzai, Vivienne Westwood and Katie Price are to speak at the Women of the World Festival at London's Southbank Centre today.
The annual event sees 300 speakers and performers from around the world take part in talks and concerts to mark International Women's Day.
Malala, who was shot in the head by the Taliban in 2012, is set to speak about the relationship between Pakistani and British societies, and how harmful it is for western countries to be complacent or blind to their own injustices.
She will also discuss the work of the Malala Fund and how it is changing the lives of young girls around the globe.
Plans for a £120 million makeover at the Southbank Centre have been put on hold after Boris Johnson waded into a row over the position of the area's skatepark.
The Southbank Centre had wanted to move it 120 meters away, but the Mayor said that he didn't think it should be moved.
The arts organisation said today that it would put the process on hold for three months, to try to find a funding solution to the problem. If the skatepark isn't moved, they will miss out on revenue from shops and restaurants that they had hoped to move into the undercroft.
A spokesman said:
"The Mayor has the final say in the planning process and the scheme is therefore unlikely to gain planning permission without the retention of the skate park."
We are surprised by the Mayor's unexpected statement. We look forward to hearing how he intends to full the financial gap that now stands between us and our ability to provide free art and culture to millions of Londoners.
A huge ice sculpture of the London skyline, including a miniature version of the London Eye, is being carved out on the Southbank. The artwork is being created from large chunks of ice, and should be finished by around 6:30pm.