A motorist watches  as a wildfire burns on the side of a mountain in Lytton, British Columbia, Canada. Photograph: Darryl Dyck/The Canadian Press via AP

Warnings of 45 degree temperatures in northwestern USA and western Canada, the World Meteorological Organisation report for June reads as if the Earth(...)

Prof Daniel Miller, who led the study, says: ‘At any point a person we’re with can just disappear, having ‘gone home’ to their smartphone.’ Photograph: E+/iStock/Getty

Smartphone users have become “human snails carrying our homes in our pockets”, with a tendency to ignore friends and family in favour of their device,(...)

A simmering battle over Covid-19 vaccine patents is escalating as overflowing hospital wards in India and Brazil highlight the need to rapidly produce more shots to inoculate the world. Photograph: Buda Mendes/Getty Images

A long-simmering battle over Covid-19 vaccine patents is reaching boiling point as overflowing hospital wards in India and Brazil have highlighted the(...)

Kathleen Lonsdale: the pioneering scientist, pacifist and prison reformer was born on January 28th, 1903, in Newbridge, Co Kildare

Kathleen Lonsdale, X-ray crystallographer, pacifist and prison reformer, was an outstanding scientist who had a number of firsts for female scientists(...)

Research found around 50 per cent of patients who have been hospitalised with severe Covid-19 display heart damage months after having had the disease

Around 50 per cent of patients who have been hospitalised with severe Covid-19 display heart damage months after having had the disease, a UK study ha(...)

A file image showing a  health worker preparing a Covid-19  test. Photograph: EPA

Nearly one in five people who have tested positive for Covid-19 are diagnosed with a mental illness such as anxiety, depression or insomnia within thr(...)

Existing literature suggests that when people lack material security, things like food and shelter, they tend to invest in small, tight social networks. Photograph: Getty Images

Conventional wisdom is that people living in big cities are less likely than smaller towns to help strangers in need, but new research suggests the li(...)

Transition year students wear face masks and use a hand sanitizer before entering a classroom on their first day back at school at Mount Sackville Secondary School in Chapelizod.  Photograph: Alan Betson/The Irish Times

We’ve reached a seminal moment in the fight against Covid-19: the reopening of schools. Will it lead to an increased rate of infection? Yes. Will it(...)

Using advanced models to forecast mortality, fertility and migration, a Lancet study concludes populations of at least 23 countries could shrink by more than 50 per cent. Photograph: Lam Yik/Bloomberg

A study predicting the global population could peak at 9.7 billion by 2064 – nearly four decades earlier than predicted by the UN – and decline to 8.8(...)

Coronavirus complications: British cases reveal a rise in a life-threatening condition called acute disseminated encephalomyelitis. Photograph: iStock/Getty

Doctors may be missing signs of serious and potentially fatal brain disorders triggered by coronavirus, as they emerge in mildly affected or recoverin(...)

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