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.

Sibling astronomers join forces with the military when hostile aliens attack Earth.

After falling overboard during a cruise, a young woman washes ashore – injured, stranded, and stalked by sharks – as her desperate mother races to find her.

On a trip to Colombia, a group of college students encounter a fifty-foot boa constrictor, hungry for blood.