Presently, the moon does not have an internal magnetic field as it can be observed on Earth. However, there are localized regions on its surface up to several hundred kilometers in size where a very strong magnetic field prevails.
This has been…
Author: admin
-
Past Tropical Forest Changes Drove Megafauna and Hominin Extinctions
Researchers have found that the loss of these grasslands was instrumental in the extinction of many of the region’s megafauna, and probably of ancient humans too.
“Southeast Asia is often overlooked in global discussions of megafauna…
Continue Reading
-
Disproportionate Extinction of South American Mammals When Americas Collided
When the Isthmus of Panama rose from the sea to connect North and South America millions of years ago, mammals could cross the bridge in both directions.
But the result of this massive migration–a large proportion of mammals with North American…
Continue Reading
-
Ice Discharge in North Pacific Set Off Series of Climate Events During Last Ice Age
Repeated catastrophic ice discharges from western North America into the North Pacific contributed to, and perhaps triggered, hemispheric-scale changes in the Earth’s climate during the last ice age, new research published online today in…
Continue Reading
-
Greenland Could Lose Ice Faster Than Any Century Since The Last Ice Age Ended
A new estimate using sheet modeling finds that Greenland’s rate of ice loss this century could outpace that of any century over the past 12,000 years, when the last Ice Age ended.
Scientists used reconstructions of ancient climate to drive the…
Continue Reading
-
Cosmic Diamonds Formed During Gigantic Planetary Collisions
It is estimated that over 10 million asteroids are circling the Earth in the asteroid belt. They are relics from the early days of our solar system, when our planets formed out of a large cloud of gas and dust rotating around the sun.
When…
Continue Reading
-
The Testimony of Trees: How Volcanic Eruptions Shaped 2000 Years of World History
Researchers have shown that over the past two thousand years, volcanoes have played a larger role in natural temperature variability than previously thought, and their climatic effects may have contributed to past societal and economic…
Continue Reading
-
Geoscientists Discovers Causes of Sudden Volcanic Eruptions
Tiny crystals, ten thousand times thinner than a human hair, can cause explosive volcanic eruptions.
This surprising connection has recently been discovered by a German-British research team led by Dr. Danilo Di Genova from the Bavarian Research…
Continue Reading
-
Remnants Ancient Asteroid Shed New Light on the Early Solar System
Researchers have shaken up a once accepted timeline for cataclysmic events in the early solar system.
About 4.5 Ga (giga-anum, or billion years ago), as a large disc of dust and ice collapsed around our newly formed star, planets and smaller…
Continue Reading
-
Sea Ice Triggered the Little Ice Age
A new study finds a trigger for the Little Ice Age that cooled Europe from the 1300s through mid-1800s, and supports surprising model results suggesting that under the right conditions sudden climate changes can occur spontaneously, without…
Continue Reading