Technology advances can go two ways, one way is to have advances in medical technology to give people some life extension.
In another direction, technology is advancing in a way which is causing severe harm to human lifespan.
Examples:
Weapons of mass-destruction, chemical/biological weapons, guns and explosives...
What we put in our mouth... cigarettes, alcohol, the artificial favouring added to the food we eat and drink.
Worsening environment... air pollution, water pollution, land polution e.t.c.
Bad media... what we see/hear/read from the Internet can have a negative influence in our mind, especially for kids.
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If you have the time and don't mind reading short stories. You should read from from paragraph 2 to 22 in this article -> http://www.basicbuddhism.org/index.cfm?GPID=29