Life The father of all men is 340,000 years old Dwarfed by the X chromosome, the Y seems more ancient than we thought Albert Perry carried a secret in his DNA: a Y chromosome so distinctive that it reveals new information about the origin of our species. It shows that the last common male ancestor down the paternal line of our species is over twice … News
Health Nobel-winner Watson: Do antioxidants promote cancer? Antioxidant foods and pills could heighten the risk of cancer and diabetes, argues James Watson, the co-discoverer of the structure of DNA Opinion
Technology What your Facebook 'likes' really say about you Facebook never forgets We are already aware that our every move online is tracked, aggregated and analysed. But you couldn't have known how much Facebook can learn about you from the smallest of social interactions – a "like". Researchers from the University of Cambridge designed a simple machine-learning system to predict Facebook users' personal information … News
World's largest nests are socialist bird collectives See more: To see the image this article refers to, keep checking Picture of the Day on our news blog Short Sharp Science NO, IT'S not a giant haystack – it's an example of one of the largest structures constructed by birds. Sociable weavers ( Philetairus socius ) build huge communal nests – multistorey apartment … Regulars
Humans The body: Born to run... and throw Our bodies may seem feeble when compared to other organisms, but in an Animal Olympics we could challenge for gold in two sports Features
Enigma Number 1740 Sudoprime The grid on the right shows a cross-figure with two digits given as a start. The 11 answers are distinct primes and none has a leading zero. No digit appears more than once in any row, column or either of the two long diagonals. What are the numbers in the shaded regions? WIN £15 … Regulars
Feedback: Placebos for sale Placebos for sale PLACEBOS are now available to the general public "for the first time ever". Simon Norburn forwards a press release from journalism.co.uk announcing the good news (see bit.ly/placebosale ). "Never before has the ordinary person been able to go and get placebos for themselves or their family," it says. "Although used in virtually … Regulars