From the daily newsletter: a doctor goes to Mars. Plus: investigating celebrity yearbooks; Merve Emre on friendship books; ...

People may be exposed to unhealthy levels of airborne pollutants inside their homes, even if the outdoor air quality is good, ...

The days of Brad Pitt and Angelina Jolie’s epic Hollywood romance may be long gone, but his body apparently still tells the ...

While filming a TV documentary inside an old Victorian gunpowder store in Northern Ireland, scientists made an intriguing ...