Which light bulb uses the least electricity for the same brightness?
AnswerLED
LEDs use about 75 to 90% less energy than incandescent bulbs and last many times longer.
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Green facts & stats
7 fact-checked facts about greener everyday habits that add up, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What is the first and best of the three R's: reduce, reuse, recycle?
AnswerReduce
Reducing avoids the resource use in the first place; recycling still needs energy and transport.
Going deeper
About how long does a plastic bottle take to break down in the environment?
AnswerHundreds of years
PET bottles persist for an estimated 450 years, fragmenting into microplastics along the way.
Which appliance is usually the biggest single electricity user in a home without electric heating?
AnswerAir conditioning or the refrigerator
Cooling and refrigeration dominate most household electricity bills (US EIA).
Which kitchen habit wastes the most food in rich countries?
AnswerBuying more than gets eaten
Household overbuying and spoilage is the largest source of food waste in high-income countries (UNEP Food Waste Index).
Expert level
The recycling symbol number on plastic (1 to 7) tells you what?
AnswerThe type of resin
The Resin Identification Code identifies the plastic type; 1 (PET) and 2 (HDPE) are the most widely recycled.
Which fabric generally has the lowest water footprint per shirt?
AnswerHemp or linen
Conventional cotton is extremely water-intensive; hemp and flax (linen) need far less irrigation.
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