Some scientists now believe the first complex animals on earth may have appeared some 890 million years ago in the form of sponges.
Tag: History
Dinosaurs and the Deccan Traps
The Deccan Traps spewed toxins and greenhouse gases for 700,000 years. The Chicxulub asteroid impact near the Mexican, Yucatán peninsula was the coup de grâce for an already weakened biosphere.
Purple Haze
If we time-traveled back 1.8 billion years, the world would certainly not“seem the same”. The apex of life consisted of single-celled slime floating in ancient oceans.
Last Time The World Was Warm
The middle Pliocene is our closest analog to present-day greenhouse gas levels. It provides a probable peek into our future — several more degrees of global temperature rise and many meters of sea-level rise.
A billion years of missing oxygen
Oxygen was disappearing from the atmosphere for a billion years, Why?
A hidden mass extinction event
The first ecosystems in geological history, wiped out by oxygen