★ 4.5
★ 6.5
★ 5.8
★ 5.6
★ 6.6
★ 6.3
★ 5.9
★ 6.2
★ 7.3
★ 4.2
★ 7.2
★ 5.5
★ 4.9
★ 5.4
★ 5.3
One nation, underwater
When glacial flooding causes a ripple effect of earthquakes and tsunamis, scientists must create sinkholes to absorb the water and make the Arctic cold once more.
