A robin sits on a snow-covered tree feeding on berries in Queen Elizabeth Park in Vancouver, British Columbia March 9, 2009. Vancouver had been covered in an unseasonal blanket of snow the previous night. (REUTERS/Andy Clark) #

Elderly Russian men and women sunbathe near the wall of the Peter Paul fortress in St. Petersburg on March 16, 2009, enjoying some sunshine at the end of a long harsh winter. (ELENA PALM/AFP/Getty Images) #

A duck pecks at shiny coins frozen in the ice of the Neva river in St. Petersburg on March 16, 2009. (ELENA PALM/AFP/Getty Images) #

The sun sets behind the London eye at the end of a warm day on March 16, 2009 in London, England. (Dan Kitwood/Getty Images) #

A young woman relaxes between thousands of crocuses near the river Rhine in Dusseldorf, Germany, Wednesday, March 18, 2009. (AP Photo/Martin Meissner) #

Effigies burn during the finale of the Fallas festival, which welcomes spring and honours Saint Joseph's Day, in Valencia in the early hours of March 20, 2009. Fallas are elaborate giant sculptures and effigies made of wood and plastic which are burned at the end of the week-long spectacle of processions, fireworks, music and dancing. (REUTERS/Heino Kalis) #

The sun rises over Stonehenge as druids celebrate the Spring Equinox at Stonehenge on March 20 2009 near Amesbury, Wiltshire, England. Several hundred druids and pagans were granted special access to the ancient monument to mark the date in the calender when the length of the day and the night are equal. (Matt Cardy/Getty Images) #

An Afghan girl plays as others gather to celebrate the Afghan New Year in Kabul March 21, 2009. Afghanistan uses the Persian calendar which runs from the vernal equinox. The calendar takes as its start date the time when the Prophet Mohammad moved from Mecca to Medina in 621 AD. The current Persian year is 1388. (REUTERS/Omar Sobhani) #

Cherry blossoms in full bloom are seen inside a garden on a spring day in Srinagar, Kashmir on March 21, 2009. (REUTERS/Fayaz Kabli) #