Reuters, SITIO PARIAHAN, PhilippinesDanica Martinez, 16, grew up in a house that grows taller every few years. Her father raises the stilts of their bamboo hut so water from the sea does not reach the floor. They live in Sitio Pariahan, a coastal village in the Philippines that was once an island and is now without land. Sitio Pariahan, about 17km north of Manila, is sinking about 4cm every year, owing largely to land subsidence from the population’s overuse of groundwater, according to experts. Now rising sea levels caused by global warming could soon make this village unlivable, a problem faced by other countries in Asia, where the poorest communities are hardest hit.