With a record-breaking cold winter, the tsunami in Japan, the extraordinary killer American tornado season, the floods in Australia and a hurricane in New York, 2011 has seen an onslaught of epic-scale climate and geological events across the world, all caught on camera in the most spectacular fashion.

Using eye-witness footage, interviews with survivors and rescuers and analysis from geological and weather specialists, this documentary charts the incredible natural events of a year where almost every month was affected by a natural disaster.