Eocene Epoch, a division of geologic time that began about 54,000,000 years ago and lasted about 17,000,000 years. It is the second epoch of the Tertiary Period. During the Eocene, mammals were the dominant form of animal life. Among them were the ancestors of today's horses, pigs, whales, rats, camels, and monkeys. Reptiles and birds were also common. Plants included elm, maple, beech, and walnut trees.
A famous slogan claims that a diamond is forever. While these precious stones symbolize love and glamour for millions of couples, there's a lot about nature's most famous jewel you might not know.
The world of our far-future descendants may be as unrecognizable to us as our bustling, urbanized world would be to our bewildered ancient forefathers. Will energy drive many of those changes?