Directed by Tina Keeper and presented by the National Film Board of Canada, How Do They Recycle Steel? (1999) has everything: conveyor belts, crackling sounds, massive machines in a massive factory, sparks, smoke, fire, molten metal, more sparks…
Melting down and recycling existing steel products is a more efficient and sustainable process than mining iron ore to make virgin steel. From the EPA:
Recovering steel not only saves money, but also dramatically reduces energy consumption, compared to making steel from virgin materials. In turn, this reduces the amount of greenhouse gases released in to the air during processing and manufacturing steel from virgin ore.
Iron and steel are easily recycled and are the most recycled materials in the world.
There are more things that glow and more recycling in the archives.
In 2002, Brazilian engineer Alfredo Moser invented a simple way to bring the sun’s light indoors: fill a clear plastic 2 liter bottle with water and two capfuls of bleach, then make a hole in the roof and secure it with a waterproof sealant.
The result: 40 to 60 watts of free, natural light.
How does it work? The bleach keeps the water from turning green, and the water refracts sunlight. To see this innovative but simple invention in action, watch the the ecoideasnet video above (with captions on). Chilean Miguel Marchand helps to install the bottle lights, or Moser Lamps, in the home of a family that lives in the Andes.
Around 1.6 billion people — 25% of the Earth’s population — live without electricity, but with this simple idea, they can enjoy sustainable light in their home for free. Moser Lamps are becoming popular solutions in the Philippines, India, Bangladesh, Tanzania, Argentina, Fiji, and other countries, and give an incredibly useful second life to plastic bottles.
If you make a Moser Lamp, please contact us by twitter, facebook, or email to let us know!
h/t BBC News.
Related watching: La casa ecológica de botellas, and more videos about sustainability.