The Observer's 20 photographs of the week

Rebecca Gallantree and Alicia Blagg of Great Britain compete in the 3m synchro springboard preliminary competition at the Fina Swimming World Championships in Barcelona Photograph: David J Phillip/AP

J'hiana Jlapion sits on the shoulders of her father Jabari Jlapion during a protest in Atlanta against the acquittal of George Zimmerman in the killing of Trayvon Martin Photograph: David Goldman/AP

Jon Nazca has been in Malaga photographing the Virgen del Carmen festival. Here, women wearing traditional Sevillana dresses walk past street performers in the Calle Marques de Larios Photograph: Jon Nazca/Reuters

And here, women in traditional costumes hold hands while spectators watch the Virgen del Carmen procession. Many seaside towns in Spain celebrate the feast of Our Lady of Carmen, who is worshipped as the patron saint of sailors Photograph: Jon Nazca/Reuters

England celebrate a victory by just 14 runs over Australia on the last day of the first Ashes Test match at Trent Bridge in Nottingham Photograph: Darren Staples/Reuters

Civilians react to shellfire as Congolese armed forces drive through Munigi on the outskirts of Goma. At least 130 people were killed, including 10 soldiers, in clashes between the Congolese army and M23 rebels in the restive eastern region of the Democratic Republic of the Congo Photograph: Phil Moore/AFP

A man carries a boy wounded in what the rebel Free Syrian Army said was an air raid conducted by forces loyal to Syria's president, Bashar al-Assad, in Duma near Damascus Photograph: Reuters

An aerial view shows the Za'atari refugee camp near the Jordanian city of Mafraq, some five miles from the border with Syria. The camp is home to 115,000 Syrians Photograph: Mandel Ngan/AFP

With rainfall at only around 15% of the average monthly total so far, the heatwave continues in Britain. Here, a woman stands surrounded by fountains at the South Bank in London Photograph: Andrew Winning/Reuters

A humpback whale breaching in the Pacific ocean off Colombia. Humpback whales migrate approximately 5,000 miles each year from the Antarctic peninsula to the Colombian Pacific coast to give birth and nurse their young Photograph: Luis Robayo/AFP

Head-mounted lamps leave trails of light as runners make their way to the finish line in the Badwater Ultramarathon. The 135-mile race, which bills itself as the world's toughest foot race, goes from Death Valley to Mount Whitney, California, in temperatures that can reach 55C Photograph: Lucy Nicholson/Reuters

German electronic band Kraftwerk perform at the 47th Montreux jazz festival Photograph: Denis Balibouse/Reuters

Supporters wait for the riders during the 18th stage of the Tour de France between Gap and Alpe d'Huez in the French Alps Photograph: Jeff Pachoud/AFP

And here they come with Britain's Chris Froome, wearing the overall leader's yellow jersey, climbing Alpe d'Huez with the peloton Photograph: Laurent Cipriani/AP

Photographer Mark Blinch uses a fisheye lens to capture skateboarding's biggest star, Tony Hawk, flying over Lizzie Armanto in Toronto Photograph: Mark Blinch/Reuters

The wait continues as a photographer checks his position in the media pen opposite the Lindo wing of St Mary's hospital, London, where the Duchess of Cambridge is waiting to give birth. The first child of Prince William and his wife Kate is due in mid-July, with the couple saying they have no idea of the sex of the royal baby, who will be third in line to the British throne Photograph: Suzanne Plunkett/Reuters

Labourers try to salvage a truck after a road caved in beneath it in Ajmer, India Photograph: AP

A regular in these galleries, Mohammed Al-Shaikh continues his excellent work covering the unrest in Bahrain. Here, a protester holds a petrol bomb during clashes with police following a protest in the village of Diraz Photograph: Mohammed al-Shaikh/AFP

A woman working at a Hong Kong gallery exhibiting paintings by local artists of the kung fu legend Bruce Lee. Fans are commemorating his death 40 years ago this week and are urging the Hong Kong government to do more to honour his memory Photograph: Bobby Yip/Reuters

The man accused of the Boston bombings, Dzhokhar Tsarnaev, photographed at the moment of his arrest. This week police photographer Sergeant Sean Murphy released this image from the night Tsarnaev was captured in response to a Rolling Stone magazine cover featuring a portrait of the suspect that Murphy said glamorised the face of terrorism Photograph: Reuters