Author: BBC Radio 4

Recent global headlines have been dominated by record temperatures across Europe, North America and parts of Asia. As extreme weather events have happened for decades, how are links to climate change made? In this programme we look at how scientists use data to draw climate conclusions and hear how that data isn?t always available, with a focus on severe flooding earlier this year in part of Central Africa. With Joyce Kimutai, principal meteorologist and climate scientist at the Kenya Meteorological Department and researcher at the Grantham Institute for Climate Change, Imperial College.

Presenter: Kate Lamble Producer: Nathan Gower, Jon Bithrey Editor: Simon Watts Production Co-ordinator: Brenda Brown Sound Engineer: Graham Puddifoot

Official information on the numbers of dead and injured in the Ukraine war has been in short supply. Little has come from either the Ukrainian or Russian sides, with estimates from western governments and intelligence agencies filling the information void. But some Russian journalists have been documenting war deaths and have come up with a new way of estimating fatalities using probate records. With contributions from David Frenkel, reporter at Mediazona and the BBC?s Russian Service correspondent Olga Ivshina.

Japan has one of the highest rates of life expectancy and one of the lowest birth rates. But does that mean that a widely circulated claim ? that more nappies aimed at adults are sold in Japan than those made for babies ? is true? With guests Sarah Parsons, Senior Teaching Fellow at SOAS in London and Dr Mireya Solis, Knight Chair in Japan Studies at the Brookings Institution.

Presenter: Charlotte McDonald Reporter: Isobel Gough Producers: Isobel Gough, Jon Bithrey Sound Engineer: James Beard Production Co-ordinator: Brenda Brown

Various claims have been made about how much water is used in the production of a pair of jeans, that cornerstone of casual clothing. With growing worries over the environmental impact of denim production, More or Less decided to investigate - with the help of journalist and researcher Elizabeth L. Cline who has written extensively on sustainability and the fashion industry. This programme was first broadcast in July 2022. Presenter: Tim Harford Producers: Lizzy McNeill, Jon Bithrey Programme Coordinator: Brenda Brown Sound engineer: Neil Churchill Editor: Richard Vadon (A worker sews blue jeans in a textile company in Xintang, China, dubbed the 'denim jeans capital of the world'. Photo: Lucas Schifres/Getty images)

More than 1.2 million people came into the country to stay for more than 12 months in 2022. As only 560,000 left the country, this means net migration is at an all-time high. Both the Prime Minister and Home Secretary have said the number of people coming needs to come down. But who counts as an immigrant? How are the figures worked out?

Charlotte McDonald will be finding out what the numbers tell us about who is coming to the UK and why. Plus - what about the people who left in 2022?

An article on the UK?s Telegraph newspaper website claimed that there would be just 6 grandchildren for every 100 South Koreans today. We ask whether that figure is correct and look at why South Korea?s birth rate has fallen to one of the lowest in the world, with the help of author and mathematician Rob Eastaway and journalist and author Hawon Jung.

Presenter: Tim Harford Producers: Bethan Ashmead Latham, Jon Bithrey Editor: Richard Vadon Production Co-ordinator: Brenda Brown Sound Engineer: James Beard

One of Rishi Sunak's five priorities for 2023 is to halve inflation. Given prices are still rising, we discuss whether it's going be possible. Also does Scotland have more tidal power capacity than the rest of the world combined, as has been claimed? We look at competing claims about how prepared the NHS was before the pandemic, ask whether scrapping VAT on products like tampons and e-books has actually benefitted consumers and look at the claim that one in three women in the UK has had an abortion.

?This episode was updated on 26th June to remove an error in how we quantified 32 trillion dollars? The level of US government debt has just surpassed 32 trillion dollars. Negotiations over raising the borrowing limit once again went down to the wire a few weeks ago. But how concerned should we all be about how much the US government borrows? We investigate with the help of Kent Smetters, professor at the Wharton School of the University of Pennsylvania and Betsey Stevenson, Professor of Economics and Public Policy at the University of Michigan.