By creating conditions akin to the center of the Earth inside a laboratory chamber, researchers have improved the estimate of the age of our planet’s solid inner core, putting it at 1 billion to 1.3 billion years old.
The results place the core…
Author: admin
-
Research Links Southeast Asia Megadrought to Drying in Africa
Physical evidence found in caves in Laos helps tell a story about a connection between the end of the Green Sahara, when once heavily vegetated Northern Africa became a hyper-arid landscape, and a previously unknown megadrought that crippled…
Continue Reading
-
Sustained Planetwide Storms May Have Filled Lakes and Rivers on Ancient Mars
A new study from The University of Texas at Austin is helping scientists piece together the ancient climate of Mars by revealing how much rainfall and snowmelt filled its lake beds and river valleys 3.5 billion to 4 billion years ago.
The study…
Continue Reading
-
Fossil Leaves Show High Atmospheric Carbon Spurred Ancient ‘Global Greening’
Scientists studying leaves from a 23-million-year-old forest have for the first time linked high levels of atmospheric carbon dioxide with increased plant growth, and the hot climate off the time.
The finding adds to the understanding of how…
Continue Reading
-
Discovery Lays Blame on Supernova for Extinction Event Nearly 360 Million Years Ago
Between a decline in biodiversity and a series of extinction events, the Late Devonian period was not the most hospitable time on Earth.
And then came one or more supernovae explosions whose resulting ionizing radiation was the final push that…
Continue Reading
-
Animal Mummies Unwrapped With Hi-Res 3D X-rays
Three mummified animals from ancient Egypt have been digitally unwrapped and dissected by researchers, using high-resolution 3D scans that give unprecedented detail about the animals’ lives – and deaths – over 2000 years ago.
The three…
Continue Reading
-
How Stars Form in the Smallest Galaxies
The question of how small, dwarf galaxies have sustained the formation of new stars over the course of the Universe has long confounded the world’s astronomers.
An international research team led by Lund University in Sweden has found that…
Continue Reading
-
Study Rewrites the Recent History of Productive Cascade Arc Volcanoes
Volcanic eruptions in the Cascade Range of the Pacific Northwest over the last 2.6 million years are more numerous and closely connected to subsurface signatures of currently active magma than commonly thought, according to newly published…
Continue Reading
-
Researchers Unlock Secrets of the Past With New International Carbon Dating Standard
Radiocarbon dating is set to become more accurate than ever after an international team of scientists improved the technique for assessing the age of historical objects.
The team of researchers at the Universities of Sheffield, Belfast, Bristol,…
Continue Reading
-
Academics Develop New Method to Determine the Origin of Stardust in Meteorites
Meteorites are critical to understanding the beginning of our solar system and how it has evolved over time.
However, some meteorites contain grains of stardust that predate the formation of our solar system and are now providing important…
Continue Reading