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But there's sozncthir,g much more traub�ing than wasted mo <br /> grow#z�S body of biol.ogical� �Y about losing the night.�, � <br /> circadian rhYttur�s of humens and o��t����S inesses with the " <br /> slcep pattans to DNA repair. �g havoc an eveiyt�ing&�om <br /> 5tudies have shoum that mghtkime light e�o�s�u�e is a rIsk factar far some cancers, <br /> � diabe�Ces,heart disease and obesixy.As scientists oont3nuc to gathcr evidence,the <br /> American Medical A�ation has alz'e,adY reoomm�ded that dties reducc li�t <br /> pollution and that PeoPle avoid staring at el�ctrom.c sc�e�s after dark <br /> I,EDs are af particular cot��.Cidrs aroimd the warld are oonvertfng from traditional <br /> Y�w sodium vaPox'iamps,which cast their Iight in a nanrow range,to broad�pectnun <br /> r,�n�eera;gt,ts.�.,o�an�et�s t�insmuoa i6s,000�s in re�,t year8,stas�,� <br /> ��t��'8Y use bY 60 pao�t and netcinB�8 million in cnergy savir�gs amrually, <br /> '�P�Iem is that these bright lamps increase skygiow bY emitting more b�e light <br /> than the older ted�ziolog5'•TheY a.Lso oould have uninteRded effe�ts on wildlife.Artificiat <br /> lig!'rts ran disruPt navi�tion,mating and feedin8 among the many nocturn�Y�S <br /> ttxat share our cities. <br /> A Univcis,ity of Bristol study pubi3shed this month showed that c�rtain moths c�n't <br /> i�erfoxm evasive maneuvers a�inst lx�ator3'bats unda�LEDs And ttoei�t research in <br /> xew Z�saland shaws that some insects are 48 peroent more attracted to the new T.EDs <br /> ���Y were to the old-fashfoned lights.T�e��wotry t'tyax wiciespread use of <br /> the new technalogy will create a"white-light ni�Y'that inten�fies hght Pollution's <br /> pressure on ecosyspe�, <br /> The psyc�►ologic�l loss is less tnessurablc <br /> Wh�ihe 1994 Nort�idg�earthq,uake hrt Los An$e1es,some area res3dents ac�ually <br /> called 911 to reeport a strange cloud hnvering overtuad—it was the <br /> nebuious and ahax+�rich center of our galaxy, M�Y WaY,the <br /> �t�PP��s wh�n peoFle�ow up without stars?Do tt�ey lose t�tir oonnection to the <br /> cos�z2as that o�ancestors tradted so�uY��t after night? <br /> Eric Betz is art editor for.tSstrvrtorrty rrr�gazi�He wrote this articie fnr the Los Art,g�les <br /> TYmes. <br />