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0650

There were 15 species of gibbons in the world, but now there are 16, as a new species has been identified by scientists in the forests of southern China. Dr Sam Turvey is the senior research fellow at the Zoological Society of London.

0655

People who are middle aged and elderly should avoid caffeine after lunch and limit daytime naps to no more than half an hour to improve their sleep at night. Professor James Goodwin is chief scientist at Age UK.

0710

The crisis facing the NHS has dominated the news agenda this week. Jeremy Hunt has retracted four hour treatment targets, warnings have been issued over frontline services and there are record waiting times in A&E. Jane Dacre is president of the Royal College of Physicians.

0715

In the last few hours Barack Obama made his final speech as President. ÌýAleem Maqbool is the Â鶹ԼÅÄ’s North America correspondent.

0720

The UK's second biggest supermarket Sainsbury’s has its latest results out this morning. Today’s Katie Prescott reports.

0725

Doctors could be a step closer to being able to restore vision in patients with end-stage retinal degeneration. Robert Maclaren is a professor of ophthalmology at Oxford University.

0730

After 30 years on the programme John Humphrys reflects on the changes in the political landscape.

0740

Norway is to become the first country in the world to switch off its FM radio transmitters,Ìýmoving to digital radio broadcasts by 2017. Ole Joergen Torvmark is chief executive of Digital Radio Norway. Ford Ennals is chief executive of Digital Radio UK.

0750

It is a year since ‘A Manifesto for Clean Athletics’ was published. UK Athletics (UKA) has today launched its own Clean Athletics brand. Ed Warner is chairman of UK Athletics, the national governing body of the leading Olympic and Paralympic sports in Britain.

0810

In the last few hours Barack Obama made his final speech as President. David Litt is a former speech-writer for President Obama from 2011 to early 2016. Megan McArdle is a conservative writer and commentator for Bloomberg View.

0820

Clare Hollingworth, the veteran British war correspondent who broke the news of the Nazi invasion of Poland, died yesterday in Hong Kong at the age of 105. John Simpson is the Â鶹ԼÅÄ world affairs editor and knew Hollingworth. Dame Ann Leslie is a Daily Mail foreign correspondent.

0830

The crisis facing the NHS has dominated the news agenda this week. Jeremy Hunt has retracted four-hour treatment targets, warnings have been issued over frontline services and there are record waiting times in A&E. Sarah Wollaston is chair of the Health Select Committee. Norman Lamb is former Minister of State for Care and Support. Andy Burnham is former Health Secretary.

0840

In a speech today Attorney General Jeremy Wright will set out for the first time the legal basis for British military strikes against targets overseas, warning that technology has made it easier for terrorists to mount attacks. Professor Philippe Sands QC is a professor of law at University College London and a human rights barrister at Matrix Chambers.

0850

Yesterday on the programme Jeremy Corbyn said he would support a cap on earnings as part of his vision of a more equal country. Paul Mason is a journalist and filmmaker. ÌýJohn Harris is a journalist and author.

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All subject to change.

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