This year's Nobel Prize in Chemistry has been won by Daniel Shechtman for the discovery of quasicrystals11.30am: From twitter:@ag_smaoineamh has this photo of quasicrystal Penrose tiling at Trinity College science gallery.11.28am: Comments from the grea...

Attack on military convoy near Darulaman Palace in Afghanistan kills 17 people, including civilians and police officerUS forces in Afghanistan have suffered their deadliest insurgent attack in months after a car bomb filled with explosives rammed into t...

Thailand's prime minister urged Bangkok residents to get ready to move their belongings to higher ground as the country's worst floods in half a century begin seeping into the capital's outer districts

Photographs from the Guardian Eyewitness series

Sniper and artillery fire from pro-Saleh soldiers lifts number of protesters who have died in past two days to 50At least 23 people have been killed by Yemeni pro-regime forces – including snipers – in a second day of clashes shaking the country's capit...

On a bright day the forest glows and, while the light sharpens many of the contrasts, it can also make some of the smaller yet colourful plants difficult to see. Ponies gather in groups, often nose to tail, where the slightest movement of air will free ...

From riots in the street to rejected haircuts: six problems facing the eurozone1 The Greek bailout may not be big enough This latest rescue of Greece, consisting of a 50% writedown on the bonds held by private investors, plus €100bn of new loans, is me...