A Complete Dinosaur Timeline to Extinction: How Long Did They …
Jun 21, 2023 · The dawn of dinosaurs began with the Permian mass extinction, also known as the Great Dying.This event, around 252 million years ago, killed more than 90 percent of life on Earth at the time. Scientists are unclear on what actually caused this mass die-off (warming temperatures and volcanic activity likely played a role) but it is widely recognized as the worst …
Why Did Darker and Lighter Human Skin Colors Evolve?
Jan 28, 2019 · From Light to Dark to Varied. A range of skin colors evolved at different times, in different populations, as human spread across the globe. In addition to these genetic biological changes, groups have also developed cultural adaptations to deal with variable sunlight. For instance, we can consume diets rich in folate and vitamin D.
Ice Ages: What Causes the Earth to Freeze Over Every Few Million …
Feb 3, 2021 · Warming up, however, happens much faster. Changes in ocean currents are one of the reasons ice melts faster than it builds up. “If Earth’s orbit moves back into a configuration where the planet is receiving a lot of energy, the oceans start heating up, and the edges of the ice sheets begin to melt," explains Thomas.
10 Scientific Discoveries That Changed The World
Jan 18, 2024 · Mathematician and astronomer Nicolaus Copernicus is often credited with proposing the first heliocentric model of the universe. In 1543, he published his great work, On the Revolutions of the Heavenly Spheres, which explained his theories. Among them was that day and night was created by the Earth spinning on its axis. Copernican heliocentrism replaced the …
The Indian Ocean: A Maritime Trade Network History Nearly Forgot
Oct 20, 2016 · The Indian Ocean system developed out of the gradual integration of earlier regional networks. By 3000 B.C., travelers in small canoes and rafts moved between towns and trading ports along coastlines from Arabia to the Indian subcontinent. By 2000 B.C., millet and sorghum — grains imported from the East African coast — were part of the ...
Finally, an Accurate World Map That Doesn't Lie
Nov 29, 2022 · Robinson Projection. This attempt at creating a faithful world map took a similar tack to the Sinusoidal by pulling out the edges of the map to mimic a sphere. The Robinson isn’t as extreme, however, taking the form of a much more gentle oval. The map was an attempt at a compromise between distorting the areas of continents and the angles of ...
Meet Titanoboa: The Biggest Snake In the World
Dec 22, 2023 · All of the remains of Titanoboa thus far have been found in a coal mine deep in the rainforests of Colombia and were described in research first published in 2009 in the journal Nature.They speak of a time when a warmer climate birthed enormous species that thrived in the thick humidity. According to the study, “the great size of this 58 to 60 million-year-old snake …
What Your Sense of Humor Says About Your Mental Health
Dec 15, 2022 · In his 1905 book, Jokes and Their Relation to the Unconscious, Sigmund Freud argued that humor is the highest of the psyche's defense mechanisms, capable of turning anxiety into pleasure. More on Mental Health: The new field of nutritional psychiatry empowers patients to take care of their mental well-being — starting with dinner.
10 Famous Scientists and Their Contributions - Discover Magazine
Oct 19, 2023 · Get to know the greatest scientists in the world. Learn how these famous scientists changed the world as we know it through their contributions and discoveries. By Gemma Tarlach, Nathaniel Scharping, Lacy Schley, Bill Andrews, Eric Betz, Carl Engelking, Elisa Neckar, Ashley Braun, and Mark Barna. Oct 19, 2023 1:45 PMOct 19, 2023 1:43 PM.
How We Know What’s Deep Inside the Earth, Despite Never …
Nov 17, 2020 · It marked a pivotal point in modern seismology. Lekić likens seismology to the way we use X-rays to see inside the human body — the different densities of our muscles, organs, and bone mean that the X-rays travel through them (or get deflected by them) in different ways. “We can’t send X-rays through the Earth, because the X-rays won’t ...