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Drugs tradeThe lure of $5m helped catch Colombian capo 'Don Diego', but the man who turned him in says he is still waiting for the bountyTito will never forget the night he learned that the FBI had put a $5m price on the head of Diego León Montoya Sánchez ("Don Diego"), the leader of what was then Colombia's most powerful drug cartel. As the newest name on the FBI's list of 10 most wanted, Montoya was second only to Osama bin Laden as America's most wanted.

World Cup 2022 This article is more than 1 year oldJackson Irvine urges footballers to use 2022 World Cup to speak out on human rights This article is more than 1 year oldAustralia midfielder says global spotlight must not be ‘wasted’Irvine also spearheaded statement backing LGBTQ+ rightsAustralia midfielder Jackson Irvine has urged footballers heading to the 2022 World Cup to use the opportunity of the tournament being staged in Qatar to speak up on human rights issues and have their voices heard by a global audience.

Second world warObituaryLettice Curtis obituaryPioneering pilot who ferried nearly 1,500 aircraft during the second world warIn 1942, during a "hustle tour" of Britain, Eleanor Roosevelt, wife of the US president, arrived, with Clementine Churchill, wife of the prime minister, at White Waltham Air Transport Auxiliary (ATA) station. It was late October, and rain poured down on Berkshire. Sheltering under the wing of a four-engined Halifax heavy bomber was Lettice Curtis. Thus did the first lady shake hands with one of the most formidable of the 166 female ATA pilots who, like their male colleagues, delivered warplanes around Britain, and beyond, between 1940 and 1945.

For more than 30 years, China has upheld a strict one-child policy. And despite the country's growing prosperity, novelist Ma Jian discovered that ruthless squads still brutally enforce the law with vast fines – and compulsory sterilisations and abortions ncG1vNJzZmivp6x7tbTEoKyaqpSerq96wqikaKiipLOquMRopJplmp6urw%3D%3D

PFAS This article is more than 1 year oldMost US pet food contaminated with ‘forever chemicals’, study findsThis article is more than 1 year oldChemicals are likely used in food bags to make them repel grease, creating a potentially dangerous exposure for cats and dogs Much of America’s pet food packaging could be contaminated with PFAS “forever chemicals”, creating a potentially dangerous exposure to the toxic compounds for cats and dogs.

Tim Radford is a freelance journalist and a founding editor of Climate News Network. He worked for the Guardian for 32 years, becoming - among other things - letters editor, arts editor, literary editor and science editor. He won the Association of British Science Writers award for science writer of the year four times. ncG1vNJzZmivp6x7tbTEoKyaqpSerq96wqikaKiipLOquMRoq6Klopaxp7vRnQ%3D%3D

Notes and queriesFairytalesReaders answer other readers' questions on subjects ranging from trivial flights of fancy to profound scientific conceptsWhat's the difference between an angel and a fairy?The nature of both creatures has been debated over the centuries and it is still not clear what they actually are. Angels began (in the Old Testament) as anonymous messengers of God but evolved, via St Dionysius, Aquinas and Islamic scholarship, into immortal denizens of the heavenly realm and, in effect, a limited manifestation of the mind of God.

Readers' travel tipsUnited Kingdom holidaysCombining open air with social distancing, a stay at a UK campsite will be a popular option this year. Readers reveal their favourites The Guardian’s product and service reviews are independent and are in no way influenced by any advertiser or commercial initiative. We will earn a commission from the retailer if you buy something through an affiliate link. Learn more. Winning tip: Three Cliffs Bay, Gower, WalesWhenever people complain that the UK isn’t a holiday destination, I think of Three Cliffs Bay near Swansea.

OpinionMonarchyKing Charles should follow Denmark’s example – and tell us when he’ll abdicateSimon JenkinsQueen Margrethe is the latest European monarch to make way for new blood. It puts our archaic system to shame The abdication of Queen Margrethe of Denmark in favour of her son Frederik is a sign of a sensible constitutional monarchy. The 82-year-old queen felt “time was running out and the ills were increasing”. It was best to hand over now.