High on a crater's edge on the volcanic Canary Island of La Palma is perched one of the world's major astronomical observatories. It includes the largest optical telescope on the planet. Read more
A huge forest fire is out of control on the island of La Palma in the Canary Islands, forcing the evacuation of up to 4,000 people, including tourists. There are fears the flames could spread to an observatory housing the world's largest telescope.