* Taal Volcano in Talisay, Batangas, is one of the world's 17 Decade Volcanoes — volcanoes that need to be looked after given their active state and explosive history. It's also located in a lake, and has a lake inside it, with an even smaller island in it.

* The amount of sulfur dioxide expelled by Mount Pinatubo during its eruption on Jun. 15, 1991, created a two-year haze of sulfuric acid all over the world. It caused global temperatures to drop by 0.5 °C (0.9 °F).

* A Filipino named Roberto del Rosario made the karaoke machine in 1975, but a Japanese musician invented it four years earlier. Del Rosario, however, was the first to patent the product, which makes him the first patented producer of the karaoke.

* In the province of Camiguin, there are more volcanos (seven) than towns (five). There hasn't been an eruption since the mid 1950s, but the island has the most number of volcanoes per square kilometer in the world.