The 20 photographs of the week

A young Iraqi Yazidi refugee pours water on himself at the Newroz refugee camp in Hasaka, Syria. Almost 1,000 Iraqi families have taken refuge in Syria despite the civil war that has ravaged the country for over three years and killed more than 170,000 people Photograph: Ahmad Al-Rubaye/AFP

A displaced family from the minority Yazidi sect, fleeing violence in the Iraqi town of Sinjar, mourns the death of a family member at the Iraqi-Syrian border crossing in Fishkhabour. The man died while walking from Sinjar mountains to reunite with his family at the border Photograph: Youssef Boudlal/Reuters

Iraqi soldiers from the Abbas Unit fan out into a field in Jurf al Sakhr after they reportedly pushed back Islamic jihadist fighters from the area Photograph: Mohammed Sawaf/AFP

A multiple exposure taken from the mountains of the Sierra Norte de Madrid shows a Perseids meteor shower. The shower occurs every year in August when the Earth passes through the debris and dust of the Swift-Tuttle comet Photograph: Dani Pozo/AFP

Indonesian villagers walk to the crater of Mount Bromo during the Kasodo ceremony in which Tengger Hindus express their gratitude to the Gods for good harvest and fortune that have been bestowed on them Photograph: Fully Handoko/EPA

A man watches police walk through a cloud of smoke during clashes with protesters in Ferguson, Missouri. Protests turned violent in the St Louis suburb after a white police officer shot dead an unarmed black teenager Photograph: Jeff Roberson/AP

In New York, an Orthodox Jew joins Palestinians taking part in a protest against the Israeli offensive in Gaza Photograph: Eduardo Munoz/Reuters

Associated Press photographer Hatem Moussa was badly wounded this week when Israeli ordnance exploded in Gaza. Earlier in the week, Moussa photographed this Palestinian woman standing in the rubble of her destroyed home in Gaza City's Shijaiyah neighbourhood Photograph: Hatem Moussa/AP

In another photograph by Hatem Moussa, Palestinian boys hold Hamas flags on the rubble of Aisha Mosque destroyed by an Israeli strike Photograph: Hatem Moussa/AP

In Gaza City, two Palestinian fishermen cast their nets a few hundred yards off the beach. According to fishermen in Gaza, fewer and fewer fish are being caught because raw sewage being dumped into the ocean is driving the fish further out to sea Photograph: Roberto Schmidt/AFP

Submerged vehicles are abandoned in Royal Oak, Michigan, after flash flooding Photograph: Joshua Lott/Getty

A train is photographed after being derailed by a landslide near Tiefencastel, Switzerland Photograph: Michael Buholzer/AFP

In Zurich, Eloyse Lesueur from France competes in the women's long jump final at the European Athletics Championships. Lesueur succesfully defended the title that she won in Helsinki two years ago Photograph: Ennio Leanza/Keystone/EPA

Photographer Muhammed Muheisen continued his strong reportage on the displaced living in the outskirts of Islamabad, Pakistan. Here, a boy cools off under a hand pump during a heatwave. Pakistanis are facing a shortage of clean drinking water due to the low level of water in the country's dams Photograph: Muhammed Muheisen/AP

A nurse and a doctor for tropical medicine wearing isolation suits demonstrate the decontamination procedure as part of the Ebola treatment capability at Station 59 in Charite hospital, Berlin. The specialised quarantine unit at Station 59 is among a handful of facilities in Germany that are capable of handling Ebola cases. The disease has so far claimed over 1,000 lives in western Africa in recent weeks Photograph: Sean Gallup/Getty

A boy walks down the stairs near a hole in the wall of a house at a former Libyan army camp, known as Camp 27, in the capital Tripoli following clashes between rival militias Photograph: Mahmud Turkia/AFP

A lone house is photographed at the construction site in Fikirtepe, Istanbul. Known as the 'lone house', it belongs to a family who had refused to allow its demolition, bringing the project to a standstill for months. The owner of the house has now reached an agreement with the construction firm, finally paving the way for the building's demolition Photograph: Murad Sezer/Reuters

A passenger plane comes into land over a field containing horses at Heathrow Airport, London. Heathrow is the third busiest in the world and the airport's operator Heathrow Airport Holdings wants to build a third runway to cope with increased demand Photograph: Peter Macdiarmid/Getty

Vessels anchor in the sea as storm clouds gather over the east coast of Singapore Photograph: Edgar Su/Reuters

And, in the final image this week, performers rehearse for the opening ceremony of the 2014 Youth Olympic Games in Nanjing, China Photograph: Feature China/Barcroft Media