their most stylish stilettos to take part in washington s annual high heel drag queen race. welcome to our viewers on pbs in america and around the globe. the united nations secretary general antonio guterres says the world is heading for a catastrophe unless climate change is prioritised. new figures released by the un show concentrations of the three main greenhouse gases rose to record levels in the atmosphere last year. world leaders will meet next month in egypt, for the un climate summit cop27. our climate editor, justin rowlatt, spoke to mr guterres at the un headquarters in new york. it has been a year of extreme weather. devastating floods in pakistan, drought in somalia with millions threatened by famine, and record breaking heat in the uk and many other countries. it s why the un chief says climate is the most important issue in his in tray. climate change is the crisis of our lifetime. it s the defining issue of today s world. so, climate change remains a centra
this is bbc news. i m gareth barlow. our top stories: as extreme weather batters the planet, the un secretary general tells the bbc the world is approaching a point of no return. if we are not able to reverse the present trend that is leading to catastrophe in the world, we will be doomed. the trial of a man accused of raping a colleague inside australia s parliament house is abandoned. officials in oklahoma dig up 1a bodies, for a second time in the hope of using dna to identify more victims of the 1921 tulsa race massacre. russian forces carry out nuclear drills, as fears grow about an escalation of the war in ukraine. and the dash with a difference hundreds of runners wear