>> A national debate on the energy reform project started in the Mexican Senate on May 13. The debate, which will run for 71 days, will not only involve legislators and political leaders, but also experts from universities, NGOs and technicians from industries.

>> Following the federal court's direction, the US government has listed the polar bear as "threatened species' under the Endangered Species Act. The polar bear becomes the first species protected due to climate change.

>> Israel resumed fuel deliveries to Gaza Strip after fuel shortages caused its only power plant to shut down over the third weekend of May. The plant generates 30 per cent of the territory's electricity.

>> Over 100 people, including many school children, have been killed in yet another fuel pipeline explosion in Ijegun, near Lagos, Nigeria. The incident occurred when an earthmover ruptured a pipeline carrying diesel and ignited a huge fire.