Food Unwrapped, C4, 8.30pm
JIMMY Doherty is on a mission to find out why jelly won’t set if you add chopped papaya to it. He could probably find out the answer in a kitchen or a laboratory in the UK, but as this series is nothing if not thorough, he heads to South Africa, where he discovers that it’s all to do with the fruit’s enzymes, which can be used to tenderise meat. But could they also help the human gut? Meanwhile, Kate Quilton is in Hawaii for a tuna auction to learn why some fish have dangerous levels of mercury and others don’t, before she heads to San Francisco to meets the people who are growing fish flesh in a dish. Finally, Matt Tebbutt asks why the ice cubes made in the freezer at home are usually cloudy while the shop-bought versions are clear.
Today at Wimbledon, BBC2, 8.30pm
CLARE Balding presents highlights of the opening day’s play at the All England Club, where the first round got under way in the men’s and ladies’ singles. Much of the attention will have been on the opening match on Centre Court, which saw Roger Federer begin the defence of his title, as he aims to triumph for an astonishing ninth time at SW19. The bottom half of the women’s draw also started, as the players looked to emulate 2017 champion Garbine Muguruza of Spain, who defeated veteran American Venus Williams in last year’s showpiece.
Versailles, BBC2, 9.30pm
MADAME de Maintenon is welcomed back to Versailles as a permanent member of King Louis’ council, shedding her moderate attitude to Protestants, while the queen’s erratic behaviour places further strain on her relationship with the king.
Inside the American Embassy, C4, 10pm
THIS episode follows consular staff as President Trump’s controversial travel ban comes into force. The executive order halted all refugee admissions and temporarily barred people from seven Muslim-majority countries from entering the US. At this time of heightened scrutiny, staff must sort through Florida’s sun-seekers and businesspeople to spot the would-be economic migrants, terrorists, money launderers and former criminals trying to convince the person behind the window that they should be allowed in.
Why are you making commenting on The National only available to subscribers?
We know there are thousands of National readers who want to debate, argue and go back and forth in the comments section of our stories. We’ve got the most informed readers in Scotland, asking each other the big questions about the future of our country.
Unfortunately, though, these important debates are being spoiled by a vocal minority of trolls who aren’t really interested in the issues, try to derail the conversations, register under fake names, and post vile abuse.
So that’s why we’ve decided to make the ability to comment only available to our paying subscribers. That way, all the trolls who post abuse on our website will have to pay if they want to join the debate – and risk a permanent ban from the account that they subscribe with.
The conversation will go back to what it should be about – people who care passionately about the issues, but disagree constructively on what we should do about them. Let’s get that debate started!
Callum Baird, Editor of The National
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here