Rise of sea level threatens Nigeria’s coastal city, Lagos

In Copenhagen one of the key concerns for both politicians and environmentalists is rising sea levels. Now, a new study has found that polar ice sheets are melting even faster than previously believed. The study was published this week in the journal Nature and the scientists - from Princeton and Harvard - say that just a two degrees Celsius rise in global temperature could lead to disastrous outcomes. They say that a one-meter rise in sea level would immediately affect 145 million people around the world. And coastal areas would be particularly vulnerable.

To get a picture of what is at stake in Copenhagen and how the negotiations could have a direct impact on the ground, we go to Lagos, Nigeria. The country's economic capital has been identified as one of the most vulnerable coastal cities in the world. Amidst this danger the city’s population - especially at the ocean front -  continues to soar. Sam Olukoya reports.