Best science and technology pictures of the week

Looking down

Astronaut Chris Hadfield is posting shots from the International Space Station on Twitter, such as this one of a Soyuz capsule about to dock. (Copyright: Nasa/@Cmdr_Hadfield)
Animal count

A bullfrog is held by a keeper during London Zoo's annual stocktake, which counts every one of its animals from insects and frogs to tigers and camels. (Copyright: Getty Images)
New year, new you

A surgeon shows tools used to operate on the hundreds of people injured each year by fireworks and bullets during New Year festivities in the Philippines. (Copyright: Getty Images)
Top shot

Revellers watch fireworks illuminating the world's tallest building, Dubai's Burj Khalifa, early on 1 January (Copyright: Getty Images)
Cut off

Hong Kong activists highlight the trade in shark fins, which are cut from live animals that are then thrown back into the sea. The fins are used in soup.(Copyright: Getty Images)
Fly-by

A stealth bomber airplane flies over the parade route during the 124th Rose Parade on 1 January in Pasadena, California. (Copyright: Getty Images)
Passing out

A bomb disposal robot takes part in a police graduation ceremony at a police academy in the district of Salaheddin in Tripoli, Libya. (Copyright: Getty Images)
Tusk tally

2012 was a bad year for Africa’s elephants, with more poached ivory seized than any previous year, according to the International Fund for Animal Welfare (Copyright: Getty Images)
Cold snap

A Kashmiri boatman makes his way across a frozen lake in Srinagar, a 40-day spell of extreme winter weather known locally as 'Chillai Kalan'. (Copyright: Getty Images)
Tsunami legacy

A worker at Japan's crippled Fukushima nuclear plant, which was described as an 'unprecedented challenge' by the country’s prime minister during a visit. (Copyright: Getty Images)