Brief History of Life

Major objective of this lecture is to present on Brief History of Life. The evolutionary history of life on Earth traces the processes by which living and fossil organisms have evolved since life appeared on the planet, until the present day. The Earth is a little over 4.5 billion years old, its oldest materials being 4.3 billion-year-old zircon crystals. Its earliest times were geologically violent, and it suffered constant bombardment from meteorites. Here briefly focus on the Descent of Man and the Attacks on Evolution and the Human Story.