Most optical devices use linear material, as for example with glass, where light of a certain brightness is transmitted through the material and emerges from it at the same intensity.

A new photonic material developed with the help of a scientist based in Cork has the potential to ensure significantly higher internet speeds with sim(...)

Some 33 per cent of recently diagnosed asthma patients did not have the condition, according to new research. Photograph: Martin Barraud/Getty Images

A third of people recently diagnosed with asthma do not have the condition, research suggests. Some people may be misdiagnosed with asthma while othe(...)

 Dr Harold Atkins  from the University of Ottawa in Canada, a  member of the research team that has been using a radical treatment that can halt progression of aggressive multiple sclerosis and even reverse its symptoms. Photograph: Trevor Lush/Ottawa Hospital/PA Wire

A radical treatment that wipes out and then regenerates the immune system can halt progression of aggressive multiple sclerosis (MS) and even reverse (...)

Dr Tim Aubry of the University of Ottawa will meet housing officials in Dublin City Council.

A radical Canadian experiment to tackle homelessness has resulted in significant savings across hospital, mental health, criminal justice and addicti(...)

Bumblebees in Europe and North America may be heading for a wipeout as a result of climate change. They are not migrating northwards to keep in temperate conditions. Photograph: Nick Ansell/PA Wire

Bumblebees in Europe and North America may be heading for a wipeout as a result of climate change. They are not migrating northwards to keep themselve(...)