Things they've created or modified in a better way to make life easier.
nono wayHey, i haven't seen numbers on thoseonly plastics have numbers.
I've never seen numbers on eitherHowever you must know what type each recyclable isCardboard is usually separated from other paper, as is SteelYou'll have to check with your local recycling center for what they acceptOften, Glossy papers like you would find in your junk mail or in adverts within your newspaper (if you subscribe) are sometimes not recyclable in certain areas.
A very short list (created or modified): Cordless tools Computer-aided tomography (CAT scans) Magnetic resonance imaging (MRIs) Water purification systems Scratch resistant lenses Ear thermometers TV satellite dishes Virtual reality software WD-40 Space blanket Graphite fibers used in ultra lightweight boating, golf clubs, Stealth aircraft, etcWork on ARPANET inter-computer data link aided in the development of the Internet .
