The elephants are counted using a computer algorithm trained to identify the creatures against a variety of backdrops.
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What might you have missed in Europe amid all the focus on the US presidential election?
If the iceberg hits the southern Atlantic island, it could have catastrophic consequences for wildlife such as seals and penguins at the height of pup and chick-rearing.
The discovery of reserves of ice water on the Moon could mean future lunar bases will be able to access drinking water.
Tao Geoghegan Hart becomes only the second British man to win the Giro d'Italia as he takes the title in Milan.
Lewis Hamilton passes Valtteri Bottas to take a commanding victory in the Portuguese Grand Prix and break Formula 1's all-time win record.
Lightweight champion Khabib Nurmagomedov retires from the UFC after beating Justin Gaethje in the second round in Abu Dhabi.
Max Verstappen and Lance Stroll escaped punishment following an investigation into a crash during practice at the Portuguese Grand Prix.
Lionel Messi scores in a joint record 16th Champions League season and 17-year-old Pedri nets his first senior goal as Barcelona beat Ferencvaros.
Two-time champion Chris Froome struggles as Slovenia's Primoz Roglic takes the opening stage of the Vuelta a Espana.