An estimated 130 heads of state are expected in Rio for the Earth Summit to discuss the impact of humans on the natural world. A High Court judge has ruled that it is in the best interests of a woman who suffers from "extremely severe" anorexia to be fed against her wishes. And Greeks go to the polls this Sunday in a re-run of the national elections after the various parties failed to form a government last time.
0709 Egyptians are exercising their democratic rights as the run-off election for president takes place. The contenders are the former prime minister Ahmed Shafiq and the Muslim Brotherhood's Mohammed Morsi. Correspondent Hugh Sykes is in Cairo to report on the events.
0712 The Japanese prime minister has taken the decision to re-start two of the country's nuclear reactors. After the Fukishima accident in March last year, the nuclear power stations were gradually shut down, leaving a country in need of electricity. Today's Evan Davis discusses the significance of this with reporter Mariko Oi.
0715 Aung San Suu Kyi will deliver the Nobel Peace Prize winner's lecture she should have given in Oslo 21 years ago. Being under house arrest at the time, her son Alexander collected the prize on her behalf. The BBC's world affairs correspondent Mike Wooldridge is in Oslo for the speech to trace the journey Aung San Suu Kyi has taken.
0725 Often you can tell if people are lying by their body language. But can you tell if someone is fibbing by scanning their brain? The Cheltenham Science Festival is running a live experiment to find out. It aims to prove whether an MRI is any good as a lie detector, as some claim. Professor Derek Jones from Cardiff University explains.
0730 Sport news with Rob Bonnet
0736 Greeks go to the polls this Sunday in a re-run of the national elections after the various parties failed to form a government last time. There is a fear if the leftist Syriza were to triumph there would be a rejection of the European bailout terms possibly triggering an exit from the Euro, although it is unlikely they will win outright. Olaf Boehnke is the Berlin head of the pan-european think tank, European Council of Foreign Relations.
0741 The paper review.
0748 Thought for the Day with Editor of the Tablet, Catherine Pepinster.
Twenty years after the Rio Earth Summit, an estimated 130 heads of state are expected in the city for this year's Rio+20 meeting. Do such summits provide any framework to safeguard the planet? Environment analyst Roger Harrabin assesses the legacy of 1992 and Forum for the Future's Jonathon Porritt outlines his hopes for this year.
0755 It is Bloomsday on Radio 4, a day to celebrate James Joyce and a chance to hear Ulysses, a dramatisation of the novel. Through the day correspondent Mark Lawson will be offering commentary from Dublin, and actor Henry Goodman who is playing the character Henry Bloom explains the significance of the event.
A High Court judge has decided that a 32-year-old woman with "extremely severe" anorexia should be force fed. Tony Calland, head of the British Medical Association committee debates with Frances Connan, consultant psychiatrist at the Vincent Square eating disorder.
Rupert Murdoch attempted to hurry Tony Blair and Britain's engagement in the Iraq war. That is the claim in the latest excerpts from Alistair Campbell's Diary.
One of this summer's headline acts at the Meltdown music festival in London is Elizabeth Fraser. Best known as the singer in the alternative rock band the Cocteau Twins in the 80s and 90s, Elizabeth Fraser is making a comeback. Today's reporter Nicola Stanbridge interviews the singer.
0825 Sport news with Rob Bonnet.
Greeks go to the polls this Sunday in a re-run of the national elections after the various parties failed to form a government last time. Europe correspondent Chris Morris discusses the severity of its financial problems. And Socrates Lazaridis, the chairman of Athens Stock Exchange, and Myles Bradshaw, portfolio manager at the bond investment company Pimco, examine the potential impact of the vote and the current prospects for a Greek exit from the Eurozone.
0839 The paper review.
0842 The Queen's Birthday Honours are out today - the usual array of actors, sports stars and celebrities will collect their gongs from the Palace in due course. Among them will be the architect Zaha Hadid - a one-time guest editor of this programme - in fact. She's also the brains behind the Olympic Aquatic Centre, waiting ready for the London Games.
The polls have opened in the second round of Egypt's presidential elections and it's a stark choice - Hosni Mubarak's last prime minister Ahmad Shafiq or the Muslim Brotherhood's man Mohammed Morsi. Mursi beat Shafiq in the first round, but only just. Last night our correspondent Hugh Sykes wandered around central Cairo to harvest some election-eve opinions.
Today marks the 100th anniversary of the birth of Enoch Powell. Powell's biographer, the writer Simon Heffer, and political documentary-maker Michael Cockerell, who created an in-depth television profile of the man, discuss the life, character and legacy of one of this country's most controversial statesmen.