The Observer's 20 photographs of the week

Samantha Kinzig and her five-year-old daughter Isabel take a closer view of a damaged bridge after heavy rain in Longmont, Colorado, caused massive flooding. Photograph: Marc Piscotty/Getty

Palestinian protesters throw stones at Israeli troops in a demonstrate against the Israeli settlement of Shelo, near Nablus in the West Bank. Photograph: Alaa Badarneh/EPA

A Palestinian girl stands in front of her family home during a power cut at the Jabaliya refugee camp in northern Gaza. Electricity is reported to be cut for 12 hours a day as a result of the unstable political and economic situation. This photograph is from Ali Ali, a regular contributor to this gallery. Photograph: Ali Ali/EPA

Members of the Muslim Brotherhood light flares during a demonstration in Cairo in support of the deposed president Mohammed Morsi and against the military-backed government. Photograph: Mahmoud Khaled/AFP

Rafael Nadal of Spain celebrates winning the US Open final against Novak Djokovic of Serbia at the USTA Billie Jean King National Tennis Centre in New York. Photograph: Carl Recine/Action Images

Also in New York, this week was Fashion Week. Here models walk the runway at the Betsey Johnson show. Photograph: Mehdi Taamallah/AFP

A man walks through the 9/11 Empty Sky memorial at Liberty state park in New Jersey. The memorial is across from New York's lower Manhattan, the site of the World Trade Centre. Americans marked the 12th anniversary of the September 11 attacks this week. Photograph: Gary Hershorn/Reuters

Waders take to the skies to seek new feeding grounds as the tide comes in at the Snettisham nature reserve in Norfolk, an event that has become known as the 'Snettisham spectacular'. The reserve, which is on the edge of the Wash region, supports more than 300,000 birds. Photograph: Dan Kitwood/Getty

A rabbit leaps to avoid a leopard cub during a 'test' of the cub's hunting instincts, at a wildlife park in Qingdao, China. The rabbit did not, unfortunately, survive. Photograph: Reuters

A frog falls from the sky during the launch of Nasa's lunar atmosphere and dust environment explorer in Virginia. Nasa said that the photograph had not been doctored: “The photo team confirms the frog is real and was captured in a single frame by one of the remote cameras used to photograph the launch. The condition of the frog, however, is uncertain.” Photograph: NASA/Reuters

Jonathan Trappe prepares to take off in Caribou, Maine, as he attempts to cross the Atlantic under a canopy of coloured helium balloons. Trappe's attempt ended 12 hours later, when he was forced to land by technical issue Photograph: Alexandre Ayer/Barcroft

The wreck of the Costa Concordia cruise ship next to Giglio Island off the west coast of Italy, in a photograph taken from an Italian navy helicopter. Salvage experts plan to try to right the ship next week, nearly two years after it capsized with the deaths of 32 people. Photograph: Alessandro Bianchi/Reuters

A woman and her child, who were injured in communal clashes, rest on a hospital bed in Muzaffarnagar, in the northern Indian region of Uttar Pradesh. India's political parties blamed each other for riots between Hindus and Muslims in which at least 31 people were klilled, and hundreds forced to flee their homes. The clashes came ahead of a general election due before May. Photograph: Reuters

A geyser of floodwater rises from a sewer on Canon Avenue in Manitou Springs, Colorado, as storms continue over the Waldo Canyon area. Photograph: Barcroft Media

Amaya Munoz, 31, is consoled by her friend Alberto after she is evicted from a rented flat in Madrid. Munoz says she was made redundant a year ago and could not afford to keep paying her rent. Photograph: Susana Vera/Reuters

A Syrian girl eats a tomato at a refugee camp in the eastern Lebanese town of al-Faour, near the border with Syria. Unicef estimates that more than 4 million Syrian children are affected by the country's civil war. Photograph: Nariman El-Mofty/AP

A worker carries a box of plastic bottles inside a three-storey lantern made of 7,000 recycled bottles in Hong Kong. The giant lantern named Rising Moon will be used as part of the Chinese mid-autumn festival and is intended to raise awareness of the importance of environmental conservation. Photograph: Philippe Lopez/AFP

Afghan football fans celebrate winning the South Asian Football Federation championship after their team beat India in the final. President Hamid Karzai embraced Afghanistan's victorious football team in a rare moment of shared joy for the country, but officials told jubilant Afghans to stop firing guns into the air in celebration. Photograph: Omar Sobhani/Reuters

Indian devotees transport an idol of elephant headed Hindu god Lord Ganesha to their home on the occasion of the Ganesha Chaturthi festival in Mumbai. Photograph: Divyakant Solanki/EPA

The parade of the 'Worker-Peasant Red Guards' in Pyongyang, which takes place to mark the country's 65th anniversary, as photographed by North Korea's official KCNA news agency. Photograph: KCNA/Reuters