Search results
Nov 9, 2016 · They found that participants 'glowed' throughout the day, with the brightest spots appearing around the forehead, neck, cheeks in the late afternoon. The dimmest bioluminescence was recorded late at night. And this wasn't infrared radiation caused by heat - despite how the images might appear.
- 550,000 to 750,000 Years Ago: The Beginning of The Homo Sapiens Lineage
- 300,000 Years Ago: Fossils Found of Oldest Homo Sapiens
- 300,000 Years Ago: Artifacts Show A Revolution in Tools
- 100,000 to 210,000 Years Ago: Fossils Show Homo Sapiens Lived Outside of Africa
Genes, rather than fossils, can help us chart the migrations, movements and evolution of our own species—and those we descended from or interbred with over the ages. The oldest-recovered DNA of an early human relative comes from Sima de los Huesos, the “Pit of Bones.” At the bottom of a cave in Spain’s Atapuerca Mountains scientists found thousands...
As the physical remains of actual ancient people, fossils tell us most about what they were like in life. But bones or teeth are still subject to a significant amount of interpretation. While human remains can survive after hundreds of thousands of years, scientists can’t always make sense of the wide range of morphological features they see to def...
Our ancestors used stone tools as long as 3.3 million years ago and by 1.75 million years ago they’d adopted the Acheulean culture, a suite of chunky handaxes and other cutting implements that remained in vogue for nearly 1.5 million years. As recently as 400,000 years ago, thrusting spearsused during the hunt of large prey in what is now Germany w...
Many genetic analyses tracing our roots back to Africa make it clear that Homo sapiensoriginated on that continent. But it appears that we had a tendency to wander from a much earlier era than scientists had previously suspected. A jawbone found inside a collapsed caveon the slopes of Mount Carmel, Israel, reveals that modern humans dwelt there, al...
- Brian Handwerk
5 days ago · Around 24 to 26 weeks’ gestation, the end of the second trimester, the first nerve pathways wire up the cerebral cortex to the body and the outside world. Until this point, virtually no sensory pathways reach the fetal cortex, the largest part of the brain, identified with consciousness in adult humans.
Sep 28, 2017 · It is clear that light, and colour specifically, can affect us in ways that go far beyond regular colour vision. The discovery of the non-image-forming visual pathway has given a new impetus to research that explores how we respond, both physiologically and psychologically, to colour around us.
Feb 26, 2024 · Only sucking lice live on humans. Types include head lice, pubic lice, and body lice. In this article, learn to identify lice by their appearance and where on the body they feed.
Oct 21, 2024 · human evolution, the process by which human beings developed on Earth from now-extinct primates. Viewed zoologically, we humans are Homo sapiens, a culture-bearing upright-walking species that lives on the ground and very likely first evolved in Africa about 315,000 years ago.
What do flea bites look like on humans? Fleas are small and hard to see, but their bites are difficult to miss. Flea bites normally look like small, red lumps on your skin and are normally found in small clusters on your lower legs – often around your ankles and feet.
