View image in fullscreenCumnock, Scotland From left: Susie MacDonald, Emma Ledger and Charlotte Reader cool off in the hot weather at an open-air swimming pool in East AyrshirePhotograph: Jane Barlow/PAShareView image in fullscreenKino Springs, USThe newly constructed second US-Mexico border fence east of Nogales in ArizonaPhotograph: Rebecca Noble/ReutersShareView image in fullscreenCopenhagen, DenmarkLifeguards take a break without their bear-skin hats after the ceremony at the lifeguards barracks Photograph: Martin Sylvest Andersen/GettyShareView image in fullscreenNairobi, KenyaPolice officers detain protesters during demonstrations to