A pivotal hearing is under way in the UK at London's High Court as community leaders from the Niger Delta region take on oil giant Shell.  The court action was initiated by the Ogale and Bille communities who have a combined population of around 50 000 people in the area of Ogoniland.

They say the oil spills caused by oil-producing activities in the region have caused immense environmental damage, destroyed the livelihoods of local communities and caused health problems.

We zoom into the legacy of Shell in the Niger Delta with Nigeria based Environmentalist, Dr Michael Terungwa and Professor David Aworawo, a Professor of International Relations and Strategic Studies, and the Head of the Department of History and Strategic Studies, University of Lagos, Nigeria.