20 The Inquiry Panel focused its public hearings on the substantive aspects of the case, while adhering to general principles of due process, as guided under the provisions of its Omnibus Rules of Procedure. The hearings were transparent and streamed live over the internet, allowing all parties and other stakeholders from around the world to participate. Witnesses were treated as resource speakers. They either appeared in person or gave their testimonies live via videoconferencing facilities. Everyone in attendance, including members of the general public, were given the opportunity to pose questions to the resource speakers. On 27 and 28 March 2018, the Inquiry Panel held the first set of public hearings at the Session Hall of the CHRP in Metro Manila. Five resource persons, representing the indigenous youth;63 agriculture and fishery sector;64 and transport workers65 gave their testimonies. Eight resource persons provided their expert opinions on the impact of greenhouse gases (GHG) on the carbon cycle and the atmosphere;66 climate change and ocean acidification and the vulnerability of the Philippines to these;67 Carbon Majors as a source of carbon emissions;68 findings of the Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA) in relation to climate change;69 health impacts of climate change;70 and CIEL’s Smoke and Fumes report.71 On 23 and 24 May 2018, the second set of public hearings was held at the Session Hall of the CHRP in Metro Manila. Seven resource persons spoke about the concerns of fishermen, small business owners (fish consignment),72 and urban poor victims of Typhoon Ketsana (local: Ondoy) in Marikina and Rizal.73 63 Ms. Rica Cahilig. 64 Mr. Felix “Ka Jhun” Pascua, Jr., Ms. Lerissa Libao, and Ms. Elma Reyes. 65 Mr. Ernesto Cruz. 66 Dr. Gerry Bagtasa. 67 Dr. Laura David, Dr. Perry Aliño, and Dr. Maria Lourdes San Diego-McGlone. 68 Dr. Peter Frumhoff. 69 Ms. Rosalina De Guzman. 70 Dr. Victorino Molina. 71 See Exhibit K, Smoke and Fumes: The Legal and Evidentiary Basis for Holding Big Oil Accountable for the Climate Crisis (Center for International Environmental Law), dated November 2017; Ms. Lisa Anne Hamilton. 72 Mr. Pablo Rosales and Mr. Jonathan Delos Reyes. 73 Mr. Pablo Taon III, Ms. Francia Encinas, Mr. Isagani Molina, Mr. RJ De Ramos, and Mr. Manuel “Ka Noli” Abinales.