Space Unique meteorite hints Mars stayed moist for longer Scorched yet satisfyingly moist A scorched rock bought in Morocco turned out to be a diamond in the rough. The unusual meteorite may be the first sample of the Red Planet's crust ever to hit Earth, and it suggests that Mars held on to its water for longer than we thought. The meteorite, dubbed Northwest … 51¶¯Âþ
Health Poison pill: Not all mercury is toxic A global treaty on mercury pollution will do more harm than good if it bans the vaccine preservative thiomersal Opinion
Technology Video games take off as a spectator sport The latest spectator sport Editorial: " Give video games a sporting chance " EVERY sport has its idols and superstars. Now video gaming is getting them too. Professional gaming, or e-sports, exploded in popularity in the US and Europe last year. The scene has been big in Asia – particularly South Korea – for about … 51¶¯Âþ
Life Wolves bite back in the human world See more: To see the image this article refers to, keep checking Picture of the Day on our news blog Short Sharp Science GOODNESS, what big teeth you have, and what close ties to humans you have! And what negative attitudes you elicit from rural people all over the world! Behind their cultural baggage, grey … Regulars
Life The hologenome: A new view of evolution Far from being passive hangers-on, symbiotic microbes may shape the evolution of the plants and animals that play host to them Features
Space Mariko Mori: From stone circles to stardust See more: An illustrated version of this article will be published within the next two weeks on our CultureLab books and arts blog CultureLab
Enigma Number 1731 Power play In the following, "^" means is raised to the power of, so 6^2 = 36. When ((2^3)^4)^5, 2^((3^4)^5) and 2^(3^(4^5)) are each divided by 13, the remainders are respectively p, q and r. What is the absolute difference between (p+q)^r and r^(p+q)? WIN £15 will be awarded to the sender of the first … Regulars
Feedback: Excessive precision at rugby World Cup Excessive precision at the rugby union World Cup FEEDBACK doesn't pretend to understand how the International Rugby Board calculates rankings for the rugby union World Cup competition. We're just about aware that the ball is roughly ellipsoid and that in the past the players tended to be posher than in the other kind of rugby … Regulars