Democratic U.S. presidential candidate Bernie Sanders smiles as he waves to the crowd at his 2016 New Hampshire presidential primary victory rally in Concord, New Hampshire February 9, 2016. REUTERS/Shannon Stapleton

It is a measure of the radical mood of America that virtually every presidential candidate who has so far come to the fore present themselves as an op(...)

The lock (inset), snipped from the head of John Lennon in the 1960s, “likely contains hundreds of strands”. Photograph: Heritage Auctions/www.ha.com/Central Press/Getty Images

A lock of hair snipped from the head of John Lennon as the Beatle prepared for a film role is going up for auction with the current bid standing at $(...)

Steam rises from the stakes of the coal-fired Jim Bridger Power Plant outside Point of the Rocks, Wyoming. The US supreme court on Tuesday delivered a major blow to President Barack Obama by blocking federal regulations to curb carbon dioxide emissions from power plants. Photograph: Jim Urquhart/Reuters

The US supreme court has delivered a major blow to President Barack Obama by putting on hold federal regulations to curb carbon dioxide emissions main(...)

Real Texas Chili and Classic GuacamolePhotograph: Alan Betson / The Irish Times

Ah, the 1980s. The decade when Tex Mex hit Ireland for the first time. And it took the country – or maybe it was just me – by storm. In fairness(...)

An Aedes aegypti mosquito is photographed in a laboratory at the University of El Salvador, in San Salvador. For the  first time the virus has been detected in the saliva and urine of two patients. Photograph: Marvin Recinos/AFP/Getty Images

Zika has been identified in the saliva and urine of two patients infected by the virus, a leading Brazilian health institute has said. It is the firs(...)

Both pro- and anti-choice sides were dumbfounded by the outcome. The accused had been acquitted, the accusers indicted. The spectacular backfire might have been less of a surprise (although would still have been surprising) in Manhattan or San Francisco. But in Sheldon country?

Until just last week, the only thing many of us knew about Harris County is that it is located in east Texas, where Sheldon Cooper comes from. Sheld(...)

 Brandon Astor Jones: convicted of murdering a convenience store manager in Atlanta in 1979. His execution was the fifth this year in the United States, and the first of two scheduled this month in Georgia. Photograph:  AFP/Georgia Department of Corrections

A 72-year-old man convicted of murdering a convenience store manager in a 1979 robbery in Atlanta’s suburbs was executed in Georgia early on Wednesday(...)

An Aedes aegypti mosquito, which carries the Zika virus,  photographed through a microscope at the Fiocruz institute in Recife, Pernambuco state, Brazil.  Photograph: Felipe Dana/AP

A case of Zika virus infection transmitted by sex, rather than mosquito bite, has been discovered in Texas. The Dallas County health and human service(...)

An Aedes aegypti mosquito  in a laboratory in Campinas, Brazil, February 2nd, 2016. Photograph: Paulo Whitaker/Reuters

A new method to render male mosquitoes infertile by nuclear radiation could help reduce populations of insects carrying the Zika virus linked to thous(...)

A young supporter wears campaign stickers on her face as Democratic presidential candidate  Hillary Clinton speaks during a ‘get out to caucus’ event at Washington High School on January 30th in Cedar Rapids, Iowa. Photograph: Justin Sullivan/Getty Images
Iowa caucuses: how they work
  • US
  • February 1, 2016, 11:51

The battle for the US presidency shifts into a new gear with the start of states’ caucuses and primary elections in February 2016, beginning with the (...)