Nearly 40 futuristic vehicles are racing 3,000km across Australia powered only by the sun. The World Solar Challenge goes from Darwin to Adelaide and is expected to take a week, with speeds of 90-100 kmh (55-62 mph).
The annual Nikon Small World Competition recognises the best photos taken under a microscope. Winners include magnified spiders' eyes and ants' legs and the crystalline structure of minerals and pharmaceuticals.
The week's best photojournalism, from Las Vegas mass shooting and Catalonia independence referendum to Theresa May's Conservative Party Conference speech and a jaguar catching an anaconda.
Iraqi troops and Shia militia have recaptured Hawija, the last Isis stronghold in northern Iraq. Now comes another crisis for Iraq and its neighbours: Kurdish independence.
Dressed in gold brocade and festooned with medals, the Sultan of Brunei Hassanal Bolkiah and his wife and children rode on a gilded chariot pulled by 50 members of staff to mark his golden jubilee.
North Korea's Mansudae studio is "probably the largest art production centre in the world", covering nearly 30 acres and employing about 1,000 artists.
The winners of the 2017 Nikon Small World Competition have been revealed.Combining art and science, the contest recognises the best photos taken under a microscope.
Iraqi forces and Shia paramilitaries have entered the town of Hawija, one of just two pockets of territory still under control of Islamic State (Isis/Daesh) in Iraq.
Parts of Barcelona were brought to a standstill as huge crowds gathered outside Spanish government offices.
Photos of the battle for Raqqa, where the jihadists' last strongholds are a hospital and stadium, with hostages in both.
The holiest day in the Shia calendar is observed on the 10th day of Muharram, the first month of the Islamic year, to mourn the death of Imam Hussein, grandson of the Prophet Muhammad.
Tate Modern's new Turbine Hall installation should attract huge crowds keen to lie on the floor again, just as Olafur Eliasson's Weather Project did back in 2003.
David Becker, a photojournalist covering the country music festival in Las Vegas for Getty Images, braved machine gun fire to take photos of the mass shooting.
Barcelona partied into the night after provisional results of Catalonia's independence referendum indicated that 90% of voters had voted 'Yes'.
Spain's deputy prime minister praised the actions of Spanish police in cracking down on Catalonia's independence referendum.
The week's best photos, from Rohingya refugees and Mexico City earthquake, to Invictus Games, battle for Raqqa and Take a Knee protests.
Many devotees beat their heads and chests with chains and knives, and gash their heads with swords to show their grief and echo the suffering of Imam Hussein.
The RPS has named four award winners in its 160th International Photography Exhibition, the world's longest running photographic exhibition.
The US territory of 3.4 million people has struggled through nine days with virtually no electricity and shortages of fuel and clean water in the wake of the most powerful storm to hit the island in nearly 90 years.
Catalonia's interior minister says the region's authorities are aiming to ensure that the disputed referendum will take place peacefully.