Ukraine is going through its coldest winter in five years. The neighboring Poland has also been hit by heavy snow and a drop in temperatures across much of central and eastern Europe. An unusually severe cold spell has already taken at least 30 lives in Ukraine. Most of those who died of hypothermia were found frozen on the streets. In just four days nearly 700 people sought medical help for frostbites. Temperature plunged to 25 degrees Celsius below zero. The weather conditions strained the national grid, with breakdowns reported in 670 towns.