4 October 2012
Last updated at 13:04
The Rain Room at the Barbican in London is a 100-sq-m (1,000-sq-ft) field of falling water. As a visitor walks through, the rain stops around them.
The funeral of PC Nicola Hughes has taken place at Manchester Cathedral. The 23-year-old Greater Manchester Police officer was shot alongside PC Fiona Bone after they were called to a burglary in Mottram.
Journalists watch the first 2012 presidential debate at the University of Denver. After the 90-minute duel centring on taxes, the deficit and health care, commentators said Mr Romney had appeared in command while President Obama had been hesitant.
In this multiple exposure photo, St Louis Cardinals starting pitcher Shelby Miller works the ball during the fourth innings of a baseball game against the Cincinnati Reds.
Bishop Pachomius, acting head of the Coptic Orthodox Church, offers incense during Mass at Abassaiya Cathedral in Cairo, marking the end of three days of nationwide prayers and fasting for the new pope, who will be chosen on 2 December.
The statue of Christ the Redeemer in Rio de Janeiro, Brazil, is lit up in the colours of Germany's national flag to celebrate the anniversary of the country's reunification.
Sri Lankan cricket fans queue to buy tickets for the Cricket World Twenty20 semi-finals in Colombo. Sri Lanka play against Pakistan in the first semi-final, and the West Indies play Australia on 5 October.
Lewis Hamilton, of Great Britain and McLaren, signs autographs ahead of this weekend's Formula 1 Japanese Grand Prix at the Suzuka Circuit.
Turkish artillery has renewed firing at targets in Syria after shells from across the border killed two women and three children in the town of Akcakale, Turkey, on Wednesday.