Hormones are blamed for everything from weight gain to mood swings and this December, Horizon takes a closer look at these chemical regulators and their effects on our bodies and minds. We explore the impact of the so-called love hormone on the human-dog relationship and what it can tell us about social disorders. We find out what’s being done to neutralise the hormone-disrupting chemicals that are found in water and sewage, and we discover the importance of hormonal rhythms in tracking disorders that can lead to obesity, heart disease and osteoporosis.
Hormonal disorders can affect people's immune systems, metabolism and even bones, and unravelling the mystery around something called ultradian rhythms could help improve diagnosis and lead to better treatments, according to Professor Eystein Sverre Husebye, who works at the Department of Clinical Science at the University of Bergen (UiB) in Norway.
The chemistry behind social behaviour in animals, including the bond between people and dogs – and the lack of one between humans and wolves – could help scientists identify new ways of treating social disorders such as autism and schizophrenia.
As May’s European elections approach, Horizon takes a step back to see what science can tell us about European politics. We look at the latest research into people’s opinions about the EU and how they’ve changed, particularly in response to the financial crisis of 2008, and ask what needs to be done to bring the public closer to politicians. We speak to cryptography expert Dr Steve Kremer about why most of us can’t vote online yet, and democracy specialist Prof. Wolfgang Merkel about the changing political party structures in Europe and whether this is a threat to democracy. We also find out how scientists are working to detect and flag fake news on social media in order to increase the transparency of the information people encounter online.
This month, Horizon explores the global challenge of biodiversity loss. Many experts believe we are in the midst of a sixth mass extinction, where human-caused factors such as land use and pollution are causing a decline in biodiversity – something that threatens the future of our own species. We speak to British ecologist Professor Georgina Mace about how bad the situation is and what we can do about it. We explore marine ecosystems, where species relocation outpaces that of terrestrial populations, and examine how we can help these environments adapt, as well as finding out what’s in store for bees – our pollinators. Finally, we investigate the services nature provides for people – from cleaning our water to acting as a carbon sink – and ask whether putting a value on natural capital could help save it.
In remote, rural corners of Malawi, hospitals are often faced with life-and-death decisions. Women in need of emergency caesarean sections, older people with hernias, and children with appendicitis need surgery. But should they be rushed to the operating theatre or transferred to specialists in city hospitals?
Mice that have undergone weight loss surgery experience a change in the composition of their gut bacteria and the functioning of their genes, leading scientists to explore the possibility of mimicking these changes to develop a non-surgical treatment for obesity and liver disease in humans.
Technology is helping to improve healthcare in sub-Saharan Africa.
Unexpected effects of bariatric surgery could help develop non-surgical obesity treatments.
We should not over-promise about the safety of automated vehicles if we want people to trust them, says Dr Jean- François Bonnefon.