A Scottish parliamentary delegation led by MP Pauline McNeill arrives in the Gaza Strip with a medical aid convoy on April 23, 2009 after crossing the Rafah border with Egypt. Photo By ABED ABED / Flash 90.

Scottish MP Pauline McNeill, head of parliamentary delegation bringing medical aid to the Gaza Strip, speaks to local media after arriving in Rafah, southern Gaza, on the border with Egypt, on April 23, 2009.Photo By ABED ABED / Flash 90

Three weeks before the arrival of Pope Benedict XVI in Israel, the sixth annual Pope John Paul II Peace Marathon took place this morning, April 23 2009. The merathon began ar Manger Square in Bethlehem and will end at Notre Dame Church in Jerusalem with a festive ceremony and the distribution of medals. The Israeli runners joined the Italian and Palestinian runners at Rachel's Crossing. Photo by Abir Sultan/Flash 90

Three weeks before the arrival of Pope Benedict XVI in Israel, the sixth annual Pope John Paul II Peace Marathon took place this morning, April 23 2009. The merathon began ar Manger Square in Bethlehem and will end at Notre Dame Church in Jerusalem with a festive ceremony and the distribution of medals. The Israeli runners joined the Italian and Palestinian runners at Rachel's Crossing. Photo by Abir Sultan/Flash 90

Three weeks before the arrival of Pope Benedict XVI in Israel, the sixth annual Pope John Paul II Peace Marathon took place this morning, April 23 2009. The merathon began ar Manger Square in Bethlehem and will end at Notre Dame Church in Jerusalem with a festive ceremony and the distribution of medals. The Israeli runners joined the Italian and Palestinian runners at Rachel's Crossing. Photo by Abir Sultan/Flash 90

A world globe is projected and spins on top of the Old City walls of Jerusalem at the Tower of David and the Jaffa Gate on 23 April 2009 as Jerusalem celebrates Earth Hour by switching off the lights illuminating the Old City walls. Earth Hour was established in 2007 in Sydney and this year the WWF (World Wide Fund for Nature) who organised the event, hopes to have one billion people turn off their lights, as part of the Earth Day celebrations. Photo by Abir Sultan/Flash 90

Israeli president Shimon Peres and Jerusalem city mayor Nir Barkat attend a ceremony held by the Old City Walls in Jerusalem in celebration of Earth Hour. Earth Hour was established in 2007 in Sydney and this year the WWF (World Wide Fund for Nature) who organised the event, hopes to have one billion people turn off their lights, as part of the Earth Day celebrations. April 23, 2009. Photo by Abir Sultan/Flash 90

A world globe is projected and spins on top of the Old City walls of Jerusalem at the Tower of David and the Jaffa Gate on 23 April 2009 as Jerusalem celebrates Earth Hour by switching off the lights illuminating the Old City walls. Earth Hour was established in 2007 in Sydney and this year the WWF (World Wide Fund for Nature) who organised the event, hopes to have one billion people turn off their lights, as part of the Earth Day celebrations. Photo by Abir Sultan/Flash 90

A performance is held by the Old City walls of Jerusalem at the Tower of David and the Jaffa Gate on 23 April 2009 as Jerusalem celebrates Earth Hour by switching off the lights illuminating the Old City walls. Earth Hour was established in 2007 in Sydney and this year the WWF (World Wide Fund for Nature) who organised the event, hopes to have one billion people turn off their lights, as part of the Earth Day celebrations. Photo by Abir Sultan/Flash 90

Young Israelis watch a world globe projected and spinning on top of the Old City walls of Jerusalem at the Tower of David and the Jaffa Gate on April 23, 2009 as Jerusalem celebrates Earth Hour by switching off the lights illuminating the Old City walls. Earth Hour was established in 2007 in Sydney and this year the WWF (World Wide Fund for Nature) who organised the event, hopes to have one billion people turn off their lights, as part of the Earth Day celebrations. A dancer is also projected onto the walls. photo by Abir Sultan/Flash 90

Balkan Beat Box band performs on Earth Hour event in tel Aviv on April 23, 2009. The Tel Aviv municipality urged residents and business owners to turn off their electricity from 8-9 P.M. on Thursday evening, as part of a worldwide off-the-grid campaign against global warming and energy waste. An unplugged concert was held in Rabin Square. All energy supplied to the stage and minimal lighting required for safety came from renewed and alternative energy sources. A cycling site that produces energy from cyclists riding on the spot produced the energy for the concert. Photo by Gili Yaari / Flash 90.

Balkan Beat Box band performs on Earth Hour event in tel Aviv on April 23, 2009. The Tel Aviv municipality urged residents and business owners to turn off their electricity from 8-9 P.M. on Thursday evening, as part of a worldwide off-the-grid campaign against global warming and energy waste. An unplugged concert was held in Rabin Square. All energy supplied to the stage and minimal lighting required for safety came from renewed and alternative energy sources. A cycling site that produces energy from cyclists riding on the spot produced the energy for the concert. Photo by Gili Yaari / Flash 90.

Cyclists are riding special devices that generate alternative energy on Earth Hour event in Rabin Square, Tel Aviv. The Tel Aviv municipality urged residents and business owners to turn off their electricity from 8-9 P.M. on Thursday evening, as part of a worldwide off-the-grid campaign against global warming and energy waste. An unplugged concert was held in Rabin Square. All energy supplied to the stage and minimal lighting required for safety came from renewed and alternative energy sources. A cycling site that produces energy from cyclists riding on the spot produced the energy for the concert. Photo by Gili Yaari / Flash 90.

Cyclists are riding special devices that generate alternative energy on Earth Hour event in Rabin Square, Tel Aviv. The Tel Aviv municipality urged residents and business owners to turn off their electricity from 8-9 P.M. on Thursday evening, as part of a worldwide off-the-grid campaign against global warming and energy waste. An unplugged concert was held in Rabin Square. All energy supplied to the stage and minimal lighting required for safety came from renewed and alternative energy sources. A cycling site that produces energy from cyclists riding on the spot produced the energy for the concert. Photo by Gili Yaari / Flash 90.

Young Israelis are attending Balkan Beat Box band concert on Earth Hour event in tel Aviv on April 23, 2009. The Tel Aviv municipality urged residents and business owners to turn off their electricity from 8-9 P.M. on Thursday evening, as part of a worldwide off-the-grid campaign against global warming and energy waste. An unplugged concert was held in Rabin Square. All energy supplied to the stage and minimal lighting required for safety came from renewed and alternative energy sources. A cycling site that produces energy from cyclists riding on the spot produced the energy for the concert. Photo by Gili Yaari / Flash 90.

Ibn Gvirol st., one of Tel Aviv's main streets, is crowded by people attending the Earth Hour event on Rabin Square on April 23, 2009. The Tel Aviv municipality urged residents and business owners to turn off their electricity from 8-9 P.M. on Thursday evening, as part of a worldwide off-the-grid campaign against global warming and energy waste. An unplugged concert was held in Rabin Square. All energy supplied to the stage and minimal lighting required for safety came from renewed and alternative energy sources. A cycling site that produces energy from cyclists riding on the spot produced the energy for the concert. Photo by Gili Yaari / Flash 90.