THAWING
METHANE
CLIMATE
ARCTIC
PINGO
PALSA
PEAT
I
P
M
E
T
I
L
R
X
L
P
L
I
E
G
M
I
P
L
I
W
A
A
N
T
Q
C
A
E
G
V
P
L
R
O
H
U
U
A
P
X
E
E
S
C
D
A
I
T
R
R
D
O
I
A
T
A
N
D
T
H
A
W
I
N
G
I
U
E
M
U
I
A
R
O
A
U
C
L
M
P
E
A
T
I
L
V
W
N
T
O
X
B
O
E
R
L
X
X
C
L
I
M
A
T
E
R
J
I
M
P
I
N
G
O
H
H
O
S
I
O
