Dinosaurs found in unexpected places. In 1933, the Sinclair Oil Corporation sponsored an exhibit at the World’s Fair in Chicago. The Earth’s oil reserves, it was thought, formed during the era of the dinosaurs–the Mesozoic Era.
The exhibit was so popular, a silhouette of a green dinosaur, a Brontosaurus, became Sinclair’s official logo (pictured left). Gaining popularity a few decades later, at the New York World’s Fair in 1964, Sinclair introduced their expanded exhibit, called Dinoland, featuring life-size replicas of nine different dinosaurs, including their signature 27-foot tall and 70-foot long Brontosaurus. Admission was free.
Within just months of returning from a 5-year voyage on the HMS Beagle, Charles Darwin was quick to start working on a new theory in what he called his “notebooks.” The year was 1837. Etched in a leathery notebook with the letter “B” on the cover, now known as Notebook B, with Darwin’s tree diagram.
Starting with “1” at the tree trunk, the twigs and branches represent relationships between species, like a family tree. Species were indicated with sequential letters; simple enough.
Scientists, however, have become increasingly skeptical of Darwin’s tree metaphor to explain how biology works. “Evolution is trickier, far more intricate, than we had realized,” David Quammen explains in his new book entitledThe Tangled Tree (2018). Somehow, Darwin’s tree got tangled. What happened?
The industry’s longest-running research experiment reached a milestone in October, studying the evolution of more than 68,000 generations.
Biologist Richard Lenski started the now legendary experiment in his laboratory early in 1988 with just 12 flasks seeded with genetically identical bacteria known as Escherichia coli (E. coli).
Since then, the bacteria have been growing in a carefully measured solution of glucose, a type of sugar—”food” for bacteria. Each flask contained just a sparse amount of glucose to create a stressful environment, along with a high concentration of citrate, a molecular close cousin of glucose, pushing the bacteria to evolve. Since 1988, Lenski’s laboratory team has transferred a small sample of the new 50 mL Erlenmeyer flasks every day.
The armored dinosaur fossil preserved in exquisite detail unearthed in a western Canadian oil sand mine highlights the new daunting challenges facing the theory of evolution.
This stunningly preserved fossil is shattering long-standing paradigms. “The more I look at it,” said Michael Greshko, science writer for National Geographic, “the more mind-boggling it becomes.”
In 1835, the Galapagos Islands piqued a young British naturalist’s endless curiosity. Equipped with technologies not much beyond a clock, compass, measuring tape, scale, thermometer, clinometer, and microscope, the experience eventually propelled Charles Darwin to propose a new world-shattering theory of evolution in his 1859 book–The Origin of Species.
Since then, technological advances have revolutionized scientific investigations upending Darwin’s finches with a new Galapagos icon of evolution.
Darwin, Then and Now, the Most Amazing Story in the History of Science, is a chronicle of who Darwin was, how he developed his theory, specifically what he said, and what scientists have discovered since the publication of The Origin of Species in 1859.
The book traces the rise and fall of evolution's popularity as a scientifically valid theory. With over 1,000 references from Darwin and scientists, Darwin Then and Now retraces developments in the most amazing story in the history of science. DarwinThenandNow.com focuses on understanding the intersection of biological evolution and science.
Dinosaurs found in unexpected places. In 1933, the Sinclair Oil Corporation sponsored an exhibit at the World’s Fair in Chicago. The Earth’s oil reserves, it was thought, formed during the era of the dinosaurs–the Mesozoic Era.
