The Eras Geologic Time The Earth is very old -- 4.5 billion years or more -- according to recent estimates. This vast span of time, called geologic time by earth scientists, is difficult to comprehend in the familiar time units of months and years, or even centuries. How then do scientists reckon...

• Word Count: 1841
• Approx Pages: 7
• Grade Level: Undergraduate

Direct vs Indirect Threats In the human heart, danger represents fear, stimulating either a selfless or selfish response. The role of different types of danger drives humanity to react in a particular way, and in the two apocalyptic novels, On the Beach by Nevil Shute and The Road by Cormac McC...

• Word Count: 1772
• Approx Pages: 7
• Has Bibliography
• Grade Level: Undergraduate