Harvard researchers found rhesus monkeys can not only differentiate between the symbols but also to add the values of two symbols at a time.
Gordon Brown will say Scottish pensioners are "better protected" while Scotland shares "risks and resources" with the rest of the UK.
India's Supreme Court lifts a ban on iron ore mining in the western state of Goa, but caps extraction at 20m tonnes a year.
The team of international researchers was able to pinpoint an area extending from southern Puebla and northern Oaxaca to south eastern Veracruz.
Pictures taken in January and March show the change to the rover's solar panels - which Nasa said are now back to full power.
CEO Reed Hastings said the $1-$2 increase would pay for more original shows such as House of Cards (pictured).
The technique could one day be used to create rainstorms and even lighting on command, Florida researchers hope.
British journalist hopes to become Estonian MEP
What do women think about Scottish independence debate?
Making work about more than just a salary
Guarding against bugs, hackers and natural disasters
The wind energy sector blowing hot and cold
"Lethal" chainsaws and dangerous toy dolls were among more than a million unsafe goods that have been seized at the UK's ports and borders.
What 2014 looked like 50 years ago
Eugene Kaspersky, co-founder and chief executive of Russia's Kaspersky Lab warned yesterday that infection from viruses is only a matter of time.
Irish researchers found graphene, a material expected to change the way electronics are made, can be manufactured using a blender and washing up liquid.
Manchester City boss Manuel Pellegrini wants to keep winning and put pressure on Premier League leaders Liverpool.
West Bromwich Albion boss Pepe Mel says their upcoming fixture against West Ham is like a cup final.