Moves to shutter the president’s accounts and to crimp corners of the internet given to right-wing extremism raise thorny questions, both about free speech and social-media firms’ business models. Our public-policy editor takes a broad look at girlhood: how women’s adolescence has changed for the better but is challenged mightily by covid-19. And science’s bid to save more snake-bite victims’ lives.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

Today Democratic lawmakers will begin attempts to remove President Donald Trump. It could fail, or be delayed—or Republicans could see a political opportunity. Even amid a global vaccination drive, the hunt for covid-19 treatments continues; we examine two existing arthritis drugs that appear to save lives. And the synthesiser that conquered music in the 1980s and then stuck around. Additional audio courtesy of Nate Mars and Daniel Reid. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

A national-security law imposed by Beijing had not, until this week, bared its teeth; the arrests of dozens of pro-democracy figures reveals how much it can crimp opposition. At the American Economics Association’s annual shindig, a scholar implores economists to recalibrate just how self-interested they take people to be. And the inspiring life and untimely death of a beloved, goat-herding refugee. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

After previously unthinkable scenes played out in Washington’s legislature, we ask what the violence will mean for the president, Republican lawmakers and American democracy. Argentina’s move to liberalise its abortion laws reflects slowly changing attitudes across Latin America, and may spur wider change. And examining the history of Ethio-jazz, a unique musical melting pot. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

Democrats look set to win both the run-off elections that will determine control of the Senate—and how President-elect Joe Biden will be able to govern. Quantum computing is still nascent, its power yet to be truly tapped. But the finance sector is already looking to squeeze it for analytical advantage. And how Confucianism still influences society in South Korea.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

It is no surprise that more-transmissible coronavirus variants are cropping up. We ask how worrisome the strains found in Britain and South Africa are. American authorities have lodged a landmark case against Walmart for its role in the country’s worsening opioid crisis—a problem with clearly more than one cause. And dealing with the pile of unused vacation days from 2020.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

Aggressive purchasing, solid logistics and a competitive health-care system have led to a world-beating rate of immunisation—but, as ever, politics is playing a role, too. Big oil had a terrible 2020, but the sector’s troubles pre-date the pandemic; we look at the supermajors’ varying approaches to an uncertain future. And how covid-19 is reshaping China’s clubbing scene.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

Britain’s parliament will vote today on its last-gasp agreement with the European Union. But that will only mark the start of more negotiations for years to come. And we examine the shortlist from The Economist’s annual “country of the year” debate—New Zealand, Malawi and Taiwan—and unveil the winner. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

After months of deadlock, a covid-19 relief package has passed, but the battles continue. We ask how things got so dire and what President-elect Joe Biden will inherit. A deadly shootout in London more than a century ago still resonates today; we examine one of the world’s first breaking-news stories. And the colour black reaches new depths in art. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

The first inoculations are happening across the continent as part of a co-ordinated push—but levels of both supply and uptake remain uncertain. Our correspondent explores South Korea’s obsession with hiking and why it means different things to different climbers. And looking back on a troubling year for Britain’s royals.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer