ates ▁believe ▁that ▁la isse z - f aire ▁individual - based ▁rec y cling ▁does ▁not ▁cover ▁all ▁of ▁society ' s ▁rec y cling ▁needs . ▁Thus , ▁it ▁does ▁not ▁neg ate ▁the ▁need ▁for ▁an ▁organized ▁rec y cling ▁program . ▁Local ▁government ▁can ▁consider ▁the ▁activities ▁of ▁the ▁rec y cling ▁poor ▁as ▁contrib uting ▁to ▁property ▁bl ight . ▁ ▁Public ▁participation ▁rates ▁▁ ▁Ch anges ▁that ▁have ▁been ▁demonstrated ▁to ▁increase ▁rec y cling ▁rates ▁include : ▁ ▁Single - stream ▁rec y cling ▁ ▁Pay ▁as ▁you ▁throw ▁fe es ▁for ▁tr ash ▁ ▁" B et ween ▁ 1 9 6 0 ▁and ▁ 2 0 0 0 , ▁the ▁world ▁production ▁of ▁pl astic ▁res ins ▁increased ▁ 2 5 - fold , ▁while ▁recovery ▁of ▁the ▁material ▁remained ▁below ▁ 5 ▁percent ." ▁Many ▁studies ▁have ▁addressed ▁rec y cling ▁behaviour ▁and ▁strateg ies ▁to ▁encou rage ▁community ▁invol vement ▁in ▁rec y cling ▁program mes . ▁It ▁has ▁been ▁argued ▁that ▁rec y cling ▁behaviour ▁is ▁not ▁natural ▁because ▁it ▁requires ▁a ▁focus ▁and ▁appreci ation ▁for ▁long - term ▁planning , ▁whereas ▁humans ▁have ▁evol ved ▁to ▁be ▁sensitive ▁to ▁short - term ▁surv ival ▁goals ; ▁and ▁that ▁to ▁overcome ▁this ▁inn ate ▁pre dis position , ▁the ▁best ▁solution ▁would ▁be ▁to ▁use ▁social ▁pressure ▁to ▁comp el ▁participation ▁in ▁rec y cling ▁program mes . ▁However , ▁recent ▁studies ▁have ▁concluded ▁that ▁social ▁pressure ▁is ▁un vi