After a Soviet space station crashes into a New York City subway tunnel, a species of venomous spiders is discovered, and soon they mutate to gigantic proportions and wreak havoc on the city.
Ferocious humanoid creatures from the future come back to the present to devour humans.
A meteorite brings a powerful element to the Earth during the Cold War, too powerful to ever be used it's contained until a decision is made to dispose of it in the depths of the ocean. During transit on the worlds largest and most secure Super Tanker a rogue wave damages the ship and releases the element which triggers a chain reaction in the environment and the political arena.