Cebu Astronomy - Astrophotography from Cebu City by Christopher Go.
Manila Observatory - Center for atmospheric science research. Also studies solar radiation and the upper ionosphere.
PAGASA Astronomy R&D Section - Describes the observatory, planetarium, time service, solar radiation and publication unit.
Philippine Astronomical Society (PAS) - The oldest astronomy organization in the Philippines whose primary objectives include scientific research in astronomy and astrophysics.
Philippine Astronomy Directory - A directory of agencies, institutions, observatories, planetariums, and organizations in the Philippines that deal with astronomy.
UP NISMED Observatory - Houses the second largest telescope in the Philippines, used for teacher training.
Geology
Active and Inactive Volcanos - History, significant eruptions, trivia, a glossary of terms, and a map of several active and inactive volcanos.
The Moro Gulf Tsunami - Illustrated article about the source and impacts of the August, 1976, magnitude 7.9 earthquake on the island of Mindanao and the resulting tsunamis.
Philippine Volcanos - The history, eruptions, locations, and measurements of several volcanos, such as the Butusan, Canlaon and Ragang volcano.
Taal Volcano - Gives the location, history, hazards, geology and petrology.
Organizations
Kalikasan - Network of organizations and environmental advocates in the Philippines.
Pemsea.org - Promotes the life-support system and enable the sustainable use and management of coastal and marine resources through partrnerships for improved quality of life.