From snowmageddon to snoverkill

Things go from bad to worse as the snow and woe piles up around the District of Columbia

Mixing a Super Bowl of manipulation

Melissa McEwan: An anti-abortion ad, to be shown to millions during American sports' prime time, hinges upon a deliberate distortion

Tracy Quan: A licensed brothel's decision to introduce male prostitutes for women is controversial – but it shouldn't be

Research in California shows children who are too clean could find their skin's ability to heal impaired

Horticulturalists, doctors and lawyers among instructors after Michigan legalises drug as a medicine

Sarah Wildman: A panel's recommendation that American women need fewer mammograms would mean more deaths from breast cancer

Open thread: American companies are using activity monitoring gadgets to get their employees to exercise more. Would you wear one?

Scientists cure colour-blind monkeys, raising hopes of a cure for a range of genetic eye disorders in humans

What lessons can the UK learn from the US mass vaccination programme for swine flu in 1976, asks Peter Washer