420
410
400
390
380
370
360
350
340
330
320
310
410
400
390
380
370
360
350
340
330
320
310
A THRESHOLD HIGHER THAN IN ANY PERIOD OF HUMAN EXISTANCE
A
T
M
O
S
P
H
E
R
I
C
C
O
2
C
O
N
S
E
N
T
R
A
T
I
O
N
T
M
O
S
P
H
E
R
I
C
C
O
2
C
O
N
S
E
N
T
R
A
T
I
O
N
1930
1940
1950
1960
1970
1980
1990
2000
2010
2020
YEARLY MEASUREMENTS + HISTORICAL DATA FROM ICE CORE SAMPLES
CO2 LEVELS IN THE ATMOSPHERE ARE NOW ABOVE 400 PPM
OUR IMPACT ON EARTH IS NO LONGER UP FOR DEBATE
SF1013