Environmental Awareness and Sustainable Living
Environmental Awareness and Sustainable Living tests whether you can reason about resources across a product's whole life cycle and choose the least damaging option.
Core ideas
- Sustainable development (Brundtland Commission, 1987): meeting present needs without compromising the ability of future generations to meet theirs.
- Waste hierarchy: reduce beats reuse, reuse beats recycle, recycle beats disposal. Recycling does not make unlimited consumption harmless.
- Ecological footprint measures the land and water needed to support a person's lifestyle; the planet's carrying capacity is finite.
- Climate change (greenhouse gases trapping heat) is not the same as ozone depletion (CFCs thinning the ozone layer, addressed by the Montreal Protocol, 1987).
- Indian and Maharashtra specifics: Swachh Bharat Mission requires segregation into wet, dry and hazardous waste; Plastic Waste Management Rules set minimum carry-bag thickness (now 120 microns) and a ban on identified single-use plastics since 2022; Project Tiger (1973) protects Melghat and Tadoba-Andhari reserves, and Sanjay Gandhi National Park sits inside Mumbai.
Worked example
A shopkeeper offers a thin plastic carry bag. Refuse and use a cloth bag. Reason through the life cycle: the plastic bag is used for minutes but persists for centuries, breaks into microplastics and blocks drains, worsening urban flooding; the cloth bag costs more to make but replaces hundreds of bags. Note that this is a reduce action, the strongest rung of the hierarchy.
Traps that cost marks
- Treating "environment" as only trees and tigers, ignoring waste, water and energy.
- Confusing global warming with the ozone hole.
- Thinking one person's action cannot matter - that is the logic behind the tragedy of the commons.
- Assuming "sustainable" always means costly or backward.