Tom Steyer, center, a billionaire environmental activist who wants to blast the issue of climate change to the front lines of American politics, at the NextGen Climate Action office in San Francisco. Photograph:Jason Henry/The New York Times

Billionaire environmental activist Tom Steyer will give a boost to 2014 political candidates from seven US states who work to combat climate change, c(...)

Dennis McGuire, a murderer and rapist, was executed with an untested combination of drugs by the state of Ohio on January 16th. Photograph: Ohio department of rehabilitation and corrections via the New York Times

America Letter: Ohio’s execution of convicted murderer Dennis McGuire earlier this month with a new two-drug experimental concoction has stirred up(...)

Can doctors overdiagnose? At first glance it seems like a silly question. Surely diagnosis is one of our prime functions as medics? Patients expect it(...)

A bill currently being debated by the US Senate would compel internet sellers making over $1 million a year to pay a sales tax for every(...)

Clapboard home: the poet Robert Frost. Photograph: Eric Schaal//Time Life Pictures/Getty Images

At Robert Frost’s old home in Franconia, New Hampshire, there was a skunk under the deck, deer in the garden, and bears in the forest. I could (...)