Tag Archives: Climate Change

A verdant valley located in the Zagros Mountains near Dena, Iran, part of the "fertile crescent."
c. 10,000 BCE: The Dawn of Agriculture – A Turning Point in Human History

The invention of agriculture around 12,000 years ago marked a major shift in human civilization, enabling settled lifestyles and leading to the emergence of the first cities and complex societies

A portion of a recreated artwork from the renowned Lascaux caves in southwestern France, featuring a prehistoric horse and symbols that some archaeologists believe could represent stars and constellations in the night sky.
c. 200,000 BCE: The Dawn of Homo Sapiens and Their Impact on Earth

Homo sapiens, appearing around 200,000 years ago, coexisted with Neanderthals and have left a profound impact on Earth through advancements in agriculture, art, and technology, leading to significant environmental changes

A close-up view of a leaf, the main location where photosynthesis occurs in plants
c. 30-20 Million BCE: Evolution of Advanced C4 Photosynthesis in Plants

Advanced C4 photosynthesis, an evolutionary adaptation in plants, emerged 30-20 million years ago in response to decreasing atmospheric CO2 levels, enabling more efficient CO2 fixation, especially in hot, dry environments, and playing a crucial role [...]

Volcanic eruptions, continental glaciations, asteroid impacts, and ocean chemistry shifts potentially caused the End Ordovician and late Devonian mass extinctions, each eliminating 70-85% of species 450 and 360 million years ago
c. 450 Million BCE: nderstanding Mass Extinctions in Earth’s History

Delves into the history of mass extinctions, highlighting the catastrophic End Ordovician event 450 million years ago that wiped out up to 85% of species, mainly shallow water and planktonic marine organisms, likely due to [...]