"Either we're completely alone... or extraterrestrial intelligence and any kind of intelligence is pretty common, and we should be finding a lot of it here on planet Earth in the historical record."
"We don't know what triggered the evolution to complexity on Earth. That's still a big question mark."
"The earth used to be a terrible place to live...and now it's an amazing place."
"Each extinction was a visceral, violent, or at least a very, very rough occurrence and each one irrevocably changed the Earth forever."
"Life on earth could be older than the planet itself."
"The crater is considered the second largest confirmed impact structure on Earth."
"Alternate explanations like they were created there as fossils when God gave the Earth its history six thousand years ago."
"It is a surprisingly accurate number, why is that? Because two million, five hundred and eight thousand years ago, our planet started to look almost what it looks like today."
"Fossilized animals have always fascinated us because they help us understand Earth's unusual past."
"Tucked beneath the roots of the modern-day Catskill forest are the roots of the very first forest on Earth."
"There's certainly fair room for uncertainty here, but even within the range of uncertainty, there looks like there was a huge amount of organic matter on the early Earth."
"An asteroid impact played a larger role in Earth's history."
"The Earth's atmosphere might have been significantly different, potentially contributing to the extended lifespans mentioned in Genesis."
"The Nephilim is a branching term which represents not only the Giants of old but also the many defiled creatures of Earth."
"The oldest fossil evidence of algae and possibly all life on Earth are found in 3.8 billion-year-old structures called stromatolites."
"Dragonflies the size of hawks, centipedes larger than humans, a strange menagerie of giant insects and amphibians reigned over the Earth 300 million years ago."
"For the first time on Earth, giant trees stored carbon dioxide and released oxygen in abundance."
"The Earth had many things that happened to it to make it the way it is right now, and many of these things did involve luck."
"Cyanobacteria injected vast amounts of free oxygen into the water and air and sparked the oxygen revolution."
"Life formed very early in the history of the Earth when the Earth was a very inhospitable place."
"Clues like these combined with sediment grain size, shape, and composition help us build a story of what Earth's surface looked like at various times in its past."
"The Collision was so catastrophic that it nearly annihilated the young Earth."
"The Earth itself has had this tremendous history of impacts, enormous impacts."
"So Rodinia was assembled more than a billion years ago, 1,100 million years ago, it's more than a billion, right?"
"An asteroid hit the Earth 66 million years ago and unleashed hell on Earth and took out the dinosaurs and 75% of life."
"The very first green lungs of the planet are here right in front of you; the first forests sprang up here on the shores of seas, lakes, and rivers."
"If life didn't occur quickly on Earth, then we wouldn't be here to look at it."
"The existence of ice ages... occur on approximately every 100,000 years."
"Digging deep into this ancient geological formation, scientists had a chance to see the Earth in its infancy."
"By 2.7 billion years... we have fully functioning proper plate tectonics happening."
"What we see depicted in the fossils is merely a single frame of a massive movie; Earth's numerous ages likely were just as full of complex and diverse life forms as our own."
"North America and Africa collided, Tennessee collided with Morocco, and made the Appalachian Mountains."
"Life as we understand it actually began pretty quickly after the Earth was formed."
"This was the most significant event in Earth's evolution."
"What we are now doing to the world by adding greenhouse gases to the air at an unprecedented rate is new in the experience of Earth."
"The window of opportunity is open now for the first time in the four and a half billion year history of Earth."
"Scientists use three main pieces of evidence to establish Earth's temperature and carbon dioxide levels in the atmosphere over the past 800,000 years."
"The younger dras period presents a fascinating chapter in Earth's history."
"Very soon after the oceans started to form on Earth, about 4 billion years ago, that was probably the beginning of life."
"Water in our oceans appears to have alien origins."
"Life changed the planet, and mainly it was bacteria that did it."
"The Earth's very early atmosphere would have been extremely carbon dioxide rich."
"Really, it’s a fascinating story about just how dramatically the Earth has changed over time, and also how much it’s still changing."
"Have you ever imagined what life was like on Earth millions of years ago?"
"Dinosaurs exist, they existed and ruled the Earth for 250 million years."
"Life is a minimum, or approximately let's say 3.5 billion years old."
"The Cretaceous Paleogene mass extinction was a pivotal event in Earth's history."
"Mars maybe the Rosetta stone of Earth's history."
"Another handy reference is this geologic time scale, which includes the different eras and periods that make up the Earth's total 4.6 billion year history."
"The creation of this magnificent landscape is one of the most dramatic tales in the Earth's history."
"Now we know that the Earth is millions of years old and humans have been around for hundreds of thousands of years."
"The Permian Extinction casts in stark relief just how fragile life on earth is."
"The oceans cover 71% of the Earth's surface, including a lot of life forms and Earth's history."
"Many scientists believe that Titan looks like Earth did 4 billion years ago, making it the most promising candidate for finding possible life forms beyond Earth."
"The aim of historical geology is to understand the origin of the Earth and the development of the planet through its 4.6 billion-year history."
"Our Earth, a vibrant actor in this celestial theater, boasts a dramatic history with some scenes stealing the spotlight."
"For every Earth's beginning and end, the line that is in between represents time."