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How healthy is the Nigerian economy and how many possible tweets are there? Tim Harford looks back over some of the numbers that made the news in 2015. Guests include: Peter Cunliffe-Jones from Africa Check, Professor John Allen Paulos and Dr Andrew Pontzen

Explore the numbers behind the news in 2015 with guests discussing asylum applications in EU countries, zero inflation in Nigeria, America's work culture, tweets impact, cricket numbers significance, and the chaos of leap seconds in time synchronization.

Guests Leonard Doyle and Claire Melamed discuss the European migrant crisis and asylum seeker numbers in 2015. They explore the stark difference between Germany and the UK, the UN's Sustainable Development Goals, and the challenges of monitoring development goals with reliable data.

Exploring the world of Star Wars stormtroopers, from toy figures to their inefficiency in battles. Drawing parallels to historical events and comparing the number of Lego stormtroopers to Earth's armies

Exploring the historical Paris flood of 1910, the role of engineer Edmund Mayé, and the impact of accurate flood prediction. Investigating the unpredictability of 100-year floods and their connection to climate change. Comparing pollution levels in Beijing to smoking habits.

Ruth Alexander investigates claims climate change has contributed to the war in Syria, and with the climate change summit COP21 underway in Paris, we answer listener’s climate change number questions.

Investigating the accuracy of a tabloid claim that one in five British Muslims sympathize with jihadis. Exploring the controversy, survey complexities, and global views on ISIS. Factors influencing attitudes towards ISIS in various countries, despite low actual approval rates.

Explore the territorial losses of Islamic State and question the accuracy of reported stats. Discover if Héctor Bellerín is faster than Usain Bolt in a sprint challenge. Uncover insights into player speed statistics in the Premier League using tracking systems.

Are creative people more likely to suffer mental illness, and has Cuba wiped out child hunger? Wesley Stephenson investigates.

Exploring the impact of China's one child policy on population growth, addressing controversies around forced abortions, and comparing population projections of China and India for 2030.