Seven items from Wereldmuseum in Leiden to be returned to Native American tribe - Explosions and bomb threats investigated across Leiden, Sassenheim, and Voorhout - Fertility doctor may also have used own sperm to impregnate women in Leiden - Hundreds gather at Leiden's Pieterskerk for Thanksgiving - Museum uncovers three letters from Einstein to Leiden physicist - Police break up XR protest in Naturalis museum in Leiden - Nine months without trains between Leiden-Utrecht is impossible, critics say - Leiden UMC: Existing treatment can prevent phantom limb pain for amputees - Ticking the wrong boxes? Leiden prioritises problematic pizzas - Fire in apartment complex in Leiden, 10 people rescued