Agriculture
International Rice Research Institute, Mindanao Baptist Rural Life Center, Novartis Foundation: Farmer's Training Centre, Pinoy Farmer
Astronomy
Astronomical League of the Philippines (ALP), Astronomy.com.ph, Cebu Astronomy, Kevin's Astro Gallery Page, MSU-IIT Astronomical Society, Philippine Astronomical Society (PAS)
Earth Science
Mount Pinatubo, Active and Inactive Volcanos, Mayon Volcano: The Millennium Eruption, Philippine Institute of Volcanology and Seismology, Philippine Volcanos, Taal Volcano, Université de Savoie: Taal Volcano
Organizations
Integrated Chemists of the Philippines, Kalikasan: People's Network for the Environme, Pemsea Website, Philippine Astronomical Society, Save Cagayan River
Wildlife
Cebu Animal Welfare Society, Dolphins, Turtles and Dynamites, Earth Calls, Haribon Foundation for the Conservation of Natural, Lepidoptera of UP Diliman, Philippine Tarsier Foundation, Philippine Wildlife Biologists Network
Bahay Kubo Research
A directory of active Filipino researchers, their work and contribution, in the field of science and engineering.
World Heritage Sites in the Philippines
Photographs and brief descriptions from the official government site.