Scientists have published their first global assessment of the state of the world's plants.

Lions facing extinction in West Africa. There has been a catastrophic collapse in the number of lions in West Africa, with only around 400 left in the region, a new survey suggests. With fewer than 250 mature lions of breeding age, there are concerns the entire population could disappear. The research by Panthera, a non-profit organisation, was carried out in 17 countries, from Senegal to Nigeria, and took more than six years. West African lions are genetically distinct from others in Africa. In 2005, West African lions were believed to live in 21 different protected areas. But the survey, published in the scientific journal PLOS One, suggests lions now exist in just four of those sites. The report says lions now roam in just 1.1% of their historic range in West Africa. The majority of their habitat has been converted for agricultural use, says Philipp Henschel, co-author of the report. Panthera is calling for the lion to be listed as critically endangered in West Africa: all but a few of the areas we surveyed were basically paper parks, having neither management budgets nor patrol staff, and had lost all their lions and other iconic large mammals. The conservation of lions in West Africa have been largely neglected, whereas in eastern and southern Africa where millions of dollars a year are spent. The researchers discovered that West African lions now survive in only five countries; Senegal, Nigeria and a single trans-frontier population on the shared borders of Benin, Niger and Burkina-Faso.