i'd like to invite up our last two registered speakers for today, patrick roddy and max bliss. patrick and max? [inaudible conversations] >> good morning. >> good morning. >> good morning, okay. >> go ahead. >> my name is patrick roddy, i'm a san francisco-based anti-geoengineering activist and researcher, and i run stop spraying us-ff.com. today's hearing is supposed to address whether greenhouse gas emissions from aircraft endanger public health. but when you mention greenhouse gas, most people think of carbon dioxide, a harmless trace gas that's essential to all life on earth. but co2 represents just 3% of the planet's greenhouse gas. 95 percent of it is water. even preschoolers know overcast skies make the nights warmer and the days cooler, reducing the temperature range of the night's lows to the day's highs. which wrings me to -- brings me to contrails. all but the willfully ignorant know our skies have changed dramatically over the last few decades. the dark blue skies of our childhood are replaced with a milky-white haze with contrails stretching from horizon to horizon

patrick roddy and that's the last. -- max bliss. >> good morning.my name is patrick roddy appeared on the san francisco bay gu engineering activist and researcher. today's hearing will address whether greenhouse gas emissions from aircraft endanger public health but when you mentioned greenhouse gas than most people think of carbon dioxide that is essential. ca2 represents 3% of the greenhouse gas and 90% is water. even preschoolers to overcast skies make as for my skies make nice for rent is skies make as for my day schooler could confidently trapping heat and reduce the range of the lows of the day's high. which brings me to calm trails. all but the willfully ignorant to know over the last few decades the dark blue skies is a place of the milky way case crisscross the trail stretching from horizon to horizon and writing to cover the sky. the trails can be seen by anyone visiting nasa.gov. bistros persist regardless of altitude temperature, humidity or other atmospheric emissions. trails is to beware that are now all over the world. physics hasn't

i would like to invite our last two speakers for today, patrick roddy and max bliss. >> good morning. my name is patrick ronny, san francisco-based researcher, i run a spotspraying.com. today's hearing is supposed to address whether greenhouse gas emissions from aircraft endanger public health but when you mention greenhouse gas most people think of carbon dioxide, a harmless traces gas essentials to all life on earth. co2 represents just 3% of the planet's greenhouse gas. 95% of it is watervliet even preschoolers no overcast skies make nice warmer and days cooler, clouds insulate trapping heat and reduce temperature range of the lows today's highs. which brings me to resistance contrails. all but the willfully ignorant know our skies have changed dramatically over the last few decades. the dark blue skies about child and have been replaced with a milky white he's crisscrossed with persistent contrails stretching from rising to rise in and spreading to cover the sky. these frail stretch thousands of miles and can be seen by anyone visiting nasa.gov. these trails persist regardless of