Mercury is the least studied and most difficult to reach and observe of the inner planets, making the two missions that have visited the crater-pocked planet history that deserves to be remembered.
Solenopsis invicta, the “Red Imported Fire Ant”, native to South America, has proven a tenacious and destructive pest in the United States, costing Americans billions of dollars every year. That is why, in the late 1950s, the United States embarked on an all out war against the six-legged menace.