Supporting Donald Trump at the California Republican Convention in Burlingame, California on Friday. Photograph: Stephen Lam/Reuters

Deal-maker Donald Trump, the self-declared presumptive Republican presidential nominee, is negotiating his way to the election in November on a simple(...)

Hillary Clinton has 88 per cent of the delegates needed to win the Democratic belt and she leads in the polls in California. Photograph: Eric Thayer/The New York Times

Even their victory-party music after decisive state wins in the north-east on Tuesday night pointed to how Donald Trump and Hillary Clinton are only j(...)

New Jersey Governor Chris Christie (L) and his wife Mary Pat (R) listen as Republican US presidential candidate Donald Trump speaks during Trump’s five state primary night event in New York City on Tuesday. Photograph: Reuters

Donald Trump declared himself “the presumptive nominee” to stand as the Republican candidate in November’s presidential election after a clean sweep o(...)

A portrait of Donald Trump in his tennis whites hangs in the bar – formerly a library – at the Mar-a-Lago estate in Palm Beach, Florida. Photograph: Eric Thayer/New York Times

Everything seems to sparkle here at the Mar-a-Lago estate on a recent afternoon. The sun glints off the pool and off the black Secret Service SUVs in (...)

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(...)

 Pedestrians walk on Amsterdam Avenue on Sunday in New York city. Most of New York’s streets were cleaned up overnight after a huge snow storm hit the mid-Atlantic states. Photograph: Getty

New York city has slowly emerged from a massive blizzard that paralysed much of the US east coast, while snowy gridlock gripped the nation’s capital (...)

Fish Farms:  Ivar Warrer-Hansen calculates capital costs would be €33 million for a 5,000-tonne a year farm on land in Ireland. Photograph: Getty Images/iStockphoto

Salmon can now be grown from egg to full-size on land-based fish farms, but a new report for the Irish aquaculture industry says capital costs are t(...)

Benjamin Franklin wanted the turkey to be the US’s national bird. He described the bald eagle as a “bird of bad moral character”. Photograph: Larry W Smith/ EPA

The US National Turkey Federation estimates that 46 million turkeys were eaten on Thanksgiving Day last Thursday. In a recent survey, it also(...)

Work by a small research team at West Virginia University led to identifying the deception by the powerful auto giant

Daniel Carder, an unassuming 45-year-old engineer with gray hair and blue jeans, appears an unlikely type to take down one of the world’s most powerfu(...)

 US president Barack Obama announcing a  plan  to reduce greenhouse gas emissions from  coal-burning power plants. Photograph: Mark Wilson/Getty Images

The Obama administration has vowed to override states that refuse to accept its new climate goals by mandating how they should achieve emissions cuts,(...)