This is a journey to the hottest and coldest places on earth, where people go about their everyday lives under extreme conditions - and even enjoy it. The Northern Pole of Cold, where the northern hemisphere's lowest air temperature of minus 71.2 degrees Celsius has been recorded, lies in north-east Siberia. The village of Oymyakon is the coldest inhabited place on earth - a real <natural freezer>. Thousands of miles away lies America's answer to the record-holding Russian village. Furnace Creek, headquarters of Death Valley National Park. In 1913, 56.7 degrees Celsius were measured here. But the world's official hottest place is the city of Al'Aziziyah in Libya, a gateway to the Sahara desert, just 25 miles from Tripoli and the Mediterranean Sea. It holds the world record of 58 degrees Celsius - in the shade! Another infamous blast furnace is the Danakil Depression in the borderland between Eritrea and Ethiopia - one of the most forbidding deserts on earth, a vsolcanic wasteland almost 150 meters below sea level, which boasts the highest measured annual average temperature, 34.6 degrees Celsius.