Topical science series. Horizon looks at the strange patterns of weather seen in recent years. Since 2010, the UK has shivered through two record-breaking cold winters and experienced intense droughts and torrential floods. It is a pattern that seems to be playing out across the globe, with Texas seeing record-breaking rainfall followed by record-breaking drought. Horizon follows the scientists who are trying to understand what has been happening to our weather and investigates if these extremes are a taste of what is to come. episode 12