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It is from nature that we can extract the deepest wisdom, the better lessons and the truest sense of what means to live and prosper, and nothing better than to resort to the science that teaches about the history of life on Earth: palaeontology. This science can teach us a lot about how tens of thousands of animal and vegetal species appeared, thrived and decayed into oblivion, and we can use these lessons to our life in the modern world.
But we don't need to make an extensive study of evolution, or start an academic debate: just consider the case of the dinosaurs. These great reptiles became extinct at the end of the Cretaceous period, about 66,4 million years ago; considering what we know, it was an apocalyptic environmental disaster caused by a meteorite what wiped them out.
The meteor impact caused a giant, tsunami of planet-wide proportions, floods and changes in the global climate. This is known as the K-T event, and only small species of animals survived it; these species were highly adaptable to changing environmental conditions and capable of searching hospitable places among the disaster.
Indeed, even in the worst of situations, survival may depend on very small but critical differences: if you are on the roof of a house in the middle of a flood, just one metre of difference in the level of those high waters could make the difference between your survival and your death because those waters could deprive you of the only virtual island and drown you as they take you away hundreds of metres. The small mammals of that time could climb into rocks and trees, dodge obstacles and live on very minute amounts of food, as compared to the gigantic dinosaurs that, if not killed immediately by the catastrophe, would have starved out due to the lack of the huge amounts of nourishment that certainly they needed.
Birds too could escape: they could fly above disaster areas, climb on rocks, trees or mountains, search faster for food and migrate to better places. Now, these two groups can count themselves among the dominant animals on the planet. We have to count also insects, of course; these are also small, adaptable, and very numerous.
We all have a second chance if we know how to take advantage of situations; not everything is done until everything ends, and we don't even know if everything ends on our physical death. Dinosaurs paid a terrible price for their incapability to adapt and excessive dependence on certain, given environmental conditions, with the exception of those that became more versatile.
Indeed: birds are dinosaurs; they are the last surviving group of that family of animals that dominated our planet for over two hundred million years.
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