Images Dated 8th February 2013

Zinc fingers bound to a DNA strand

Zinc fingers bound to a DNA strand, molecular model. The double helix of DNA (deoxyribonucleic acid, red and yellow) is seen here with two Zif268 proteins (blue and green). A zinc finger is a type of DNA-binding domain. It is found in a wide range of DNA-binding regulatory proteins. Zinc fingers are so named for their resemblance to fingers projecting from the protein. They afford the protein a purchase on the DNA by projecting a precise arrangement of side chains into the helical DNA molecule. Each Zif268 protein has three fingers

© LAGUNA DESIGN/SCIENCE PHOTO LIBRARY

South America, Peru, Cusco. A Quechua woman standing in front of an Inca wall, holding

South America, Peru, Cusco. A Quechua woman standing in front of an Inca wall, holding a lamb and wearing a bowler hat and a liclla - while talking on a cell phone in the UNESCO World Heritage listed former Inca capital of Cusco (MR)

© Alex Robinson/ AWL Images Ltd

Awl, Bowler, Cell Phone, Clothing, Cusco, Cuzco, Hat, Inca, Incan, Indigenous, Lamb, Liclla, Mobile, Mobile Phone, Model Released, Mr, Outfit, Peru, Phone, Qosqo, Quechua, South America, Stone, Stonework, Traditional, Unesco, Unesco World Heritage, Wall, Woman, World Heritage

A pedestrian crosses Beacon Street as snow begins to accumulate in Boston

A pedestrian crosses Beacon Street as snow begins to accumulate in Boston, Massachusetts February 8, 2013. A blizzard blew into the northeastern United States on Friday, cutting short the workweek for millions who feared being stranded as state officials ordered roads closed ahead of what forecasters said could be record-setting snowfall. REUTERS/Brian Snyder (UNITED STATES - Tags: ENVIRONMENT TPX IMAGES OF THE DAY)