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Pedal-assist e-bikes lessen how draining the riding feels but not how much exercise it actually provides.

Pedaling an electric mountain bike is a workout, requiring almost as much physical exertion as riding a standard mountain bike. But the effort feels e(...)

 Flu outbreaks occur almost every year during the cold season

Influenza, or to use its more common appellation “the flu”, has been with us for a long time. One of the earliest reports of a flu-like illness comes (...)

Julia Vitarello with her daughter Mila (8) who has a rare neurological disorder, at their home in Colorado. Photograph: Nick Cote/The New York Times

A new drug, created to treat just one patient, has pushed the bounds of personalised medicine and has raised unexplored regulatory and ethical questio(...)

Facebook. File photograph: Loic Venance/AFP/Getty

Senior officials from across the US are due to launch antitrust investigations into both Facebook and Google, as the political pressure increases on l(...)

Workers clean the stage before the  Democratic presidential primary debate at the Fox Theatre in Detroit on July 30th. Photograph: Erin Schaff/The New York Times

The suspense was high. The hour was late. The questions about the next Democratic debate were many: Ten candidates or 11? Two nights or one? One billi(...)

Democratic senator from Massachusetts and Democratic presidential candidate Elizabeth Warren:  part of populist left with Senator Bernie Sanders. Photograph: Craig Lassig

Cui bono? When the economic cycle does its inexorable work, and a recession strikes the US, which political force will benefit? What the question lack(...)

The American Ireland Fund is seeking to recover damaged of $958,000 and exemplary damages of $1.9 million against Karla Stover.

The American Ireland Fund (AIF) is seeking damages of $2.9 million (€2.5 million) against the charity’s former fundraising director in Texas, alleging(...)

The Roster of the 1885 Chicago White Stockings (known today as the Chicago Cubs) Top Row: George Gore, Silver Flint, Cap Anson, Jim McCormick, Mike ‘King’ Kelly, Fred Pfeffer; Bottom Row: Jimmy Ryan, Ned Williamson, Abner Dalrymple, Tom Burns, Jim Clarkson, Billy Sunday. Photograph: Wikimedia Commons

One of sport’s most renowned rivalries was on display for the first time on this side of the Atlantic last weekend, as the Boston Red Sox and New York(...)

Employees walk by the end of a 737 Max aircraft at the Boeing factory in Washington. Photograph: Lindsey Wasson/File Photo/Reuters

Boeing’s attempts to get the 737 Max back in the air have suffered a further setback, after test pilots found a new potential flaw with the aircraft i(...)

Former US vice-president Joe Biden campaigning  in Berlin, New Hampshire, on Tuesday, as he unveiled a climate plan. Photograph: Elizabeth Frantz/The New York Times

When Joe Biden was Barack Obama’s vice-president, their administration brokered the landmark Paris climate accord and imposed the nation’s first feder(...)

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