Health A youthful environment can rejuvenate old stem cells Adult stem cells can be rejuvenated, simply by growing them in a youthful environment – at least in mice. The discovery boosts hopes that adult human stem cells could be used to grow replacement tissue without the need for embryonic stem cells or complicated cell reprogramming . Mesenchymal stem cells (MSCs) are found in the … 51¶¯Âþ
Earth Famine in the Horn of Africa: Never again? East Africa is stalked by famine once more despite scientists' early warnings of disaster. Can the lessons be learned? Opinion
Life Swarm troopers: Mutant armies waging war in the wild We can now genetically modify animals to kill off their own kind, while leaving other species unharmed Features
The species that evaded extinction In Survivors , veteran palaeontologist Richard Fortey travels the globe to track the species that have persisted throughout the millennia IT IS five years since Richard Fortey retired from his post as senior palaeontologist at London's Natural History Museum. Yet that has hardly curbed his academic output or the enthusiasm that drove him to study … CultureLab
Enigma Number 1663 Flintoff's farewell Recently retired cricket all-rounder Andrew Flintoff was known as Freddie until a much-publicised incident with a pedalo gave rise to the new nickname Fredalo. In the sum shown, digits have been replaced by letters, different letters representing different digits. Since there are 11 different letters everything is in base 11. Use 0 to … Regulars
Feedback: When the Earth was flat How the Earth wasn't RESIDENTS of Winnipeg in Canada (and doubtless elsewhere) have recently been bombarded with a television advert for Infiniti, apparently a brand of luxury personal transport, that opens with the suggestion that: "If no one ever challenged the status quo, the Earth would still be flat." James Daun, clearly a believer in … Regulars