The biggest global school rankings have been published, with Asian countries in the top five spots and African countries at the bottom. Singapore heads the table, followed by Hong Kong, with Ghana at the bottom. The UK is in 20th place, among higher achieving European countries, with the US in 28th.
Argentine ants are showing up all over the world-conquering the entire coastline around the Mediterranean Sea, parts of South Africa, Hawaii, Japan and Australia, as well as the full length of the California coastline-and no native ant species has been known to withstand their onslaught until now.