Contemporary Issues & Environmental Overview

Contemporary Issues: Definition & Importance

• Contemporary issue = event/problem of public concern occurring "with the times" (Latin: contemporarius – "with", "time").
• Two dimensions: personal (individual impact) & public (collective debate/decision).
• Mastery is crucial in a highly interconnected $21^{st}$-century world (economy, politics, rights, gender, civics).

Benefits of Studying Contemporary Issues

• Integrates every country into the "global village" → promotes efficient use of resources & peaceful cooperation.
• Enables informed opinions & democratic participation in law-making.
• Stimulates classroom discourse, critical thinking, and cultural relativism.
• Strengthens personal relationships through informed dialogue.

Philippine Environment & Natural Resources

Fisheries

• Maritime jurisdiction ≈ $2{,}200{,}000\,\text{km}^2$; hosts $\approx 2{,}400$ fish species, $65$ of commercial value.
• Among top $25$ global producers; 2019 output ≈ $\text{PHP }281.7\,\text{billion}$ (GDP share $\approx 1.3\%$).

Land Resources

• Total land ≈ $30\,\text{million ha}$; $\tfrac12$ forest, $47\%$ alienable/disposable; $33\%$ agricultural.
• Major crops: rice, corn, sugarcane, coconut, abaca, tobacco, banana, pineapple.

Mineral Resources

• Located on Pacific Ring of Fire ⇒ rich in metallic (gold, copper, nickel, iron) & non-metallic (limestone, marble) ores.
• $\approx 9\,\text{million ha}$ with metallic deposits.
• Mining GDP share $\approx 0.6\%$; employment $\approx 0.5\%$.

Key Environmental Problems

• Overfishing & destructive gear damage coral reefs; R.A. $10654$ targets illegal, unreported, unregulated (IUU) fishing.
• Soil erosion removes nutrient-rich topsoil; worsened by deforestation.
• Land conversion shifts fertile farms to urban/industrial uses despite legal limits (R.A. $6657$).
• Large-scale mining → deforestation, siltation, biodiversity loss, health risks; limited fiscal return due to generous tax incentives.

Natural Hazards in the Philippines

Earthquakes

• Sits on Pacific Ring of Fire; West Valley Fault may generate "The Big One" (≈ $M 7.2$).
• PHIVOLCS Intensity Scale $I\rightarrow X$ gauges ground shaking.

Floods

• Causes: intense/prolonged rain, silted rivers, dam release, high tide, urbanization, deforestation.
• PAGASA Flood Warnings: Yellow ($7.5–15$ mm/h), Orange ($15–30$ mm/h), Red (>30 mm/h) ⇒ monitor, prepare, evacuate.

Tsunami

• Rare but deadly (e.g., Moro Gulf $1976$ killed $\approx 8{,}000$); often earthquake-triggered.

Tropical Cyclones

• Form over $\ge 26^\circ\text{C}$ seas; categories: Depression $\le 61$ kph … Super Typhoon >185 kph.
• Tropical Cyclone Warning Signals inform wind & rain severity; destructive names retired from PAGASA list.

Volcanic Eruptions

• $6$ active volcanoes (Mayon, Taal, Bulusan, Kanlaon, Pinatubo, Hibok-Hibok); alert levels $0–5$ issued by PHIVOLCS.

Disaster Risk Reduction Framework

• R.A. $10121$ (Philippine DRRM Act $2010$) created NDRRMC & local DRRM offices; focuses on risk reduction, preparedness, response & rehabilitation.

Climate Change

Greenhouse Effect & GHGs

• Natural blanket of water vapour, $CO<em>2$, $CH</em>4$, $N_2O$ keeps Earth at $\approx +15^\circ\text{C}$ (would be $-18^\circ\text{C}$ otherwise).
• Anthropogenic sources since Industrial Revolution: burning fossil fuels ($75\%$ of GHGs), agriculture & waste ($CH<em>4, N</em>2O$), industrial chemicals (CFCs, HCFCs, HFCs).

Global Warming Impacts

• Rising temperature projection $+1.8$ to $+4.0^\circ\text{C}$ ((1990\rightarrow2100)).
• Effects: altered rainfall, stronger cyclones, glacier melt & sea-level rise, ecosystem & health stress, agricultural losses (e.g., El Niño crop damage).

International Response

• UNFCCC (Rio $1992$) → Kyoto Protocol (binding reduction quotas).
• COP21 Paris Agreement $2015$: hold warming "well below" $2^\circ\text{C}$, pursue $1.5^\circ\text{C}$ target, universal emissions pledges.