MANILA, Philippines — The Polytechnic University of Philippines (PUP) will temporarily shift to online classes amid the extreme heat and due to the upcoming transport strikes. In an advisory posted on its official Facebook page, PUP mandated all its campuses to shift to online classes starting April 15 until 30. EMBED: https://www.facebook.com/photo?fbid=846868254134046&set=a.461115309376011 “In consideration of