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[[circled]] 4 [[/circled]]

[[image of scribbled notes]]
Look at Temp Record
(can also get ancient temps from ice)
→see clearly: Temp + CO2 are linked
note ⇒ (1) CO2 way higher... expect T to go HIGHER
(2) civiliz. only in last 10,000k yrs
(people have built civ, economy, coastal cities, based on this climate)
(3) diff betw ice age
+ now ~ 5-6C!
[[image]]Recent T[[/image]] 
Expect warming & we're seeing warming (avg annual over 1000 yrs)
Note: not disputed: planet has warmed ~ 1.5F over last 100 yrs
BIG DEAL! [Doesn't sound like much, but important => already seeing effects throughout earth system + all over planet
• Warmer T
• drier => drier; wet => wetter
• Stress on H2O resources
• Glaciers receding
• Sea level ↑
• Impacts on ecosystems & agriculture

=> Perspective from Space