Τρίτη, 22 Απριλίου 2014

ScienceDaily: Top Science News

ScienceDaily: Top Science News


Birthplace of the domesticated chili pepper identified in Mexico

Posted: 21 Apr 2014 06:39 AM PDT

Combining historical language and ecological information, as well as genetic and archaeological data, scientists have identified Central-east Mexico as the likely birthplace of the domesticated chili pepper.

More questions than answers as mystery of domestication deepens

Posted: 21 Apr 2014 06:37 AM PDT

New research on domestication raises more questions than it has answered. Scientists have outlined some of the key questions that have been raised about this pivotal event in human history.

Climate benefit of biofuels from corn residue: Researchers cast doubt

Posted: 20 Apr 2014 10:18 AM PDT

Biofuels made from corn stover -- stalks, leaves and cobs that remain after harvest -- appear to emit more carbon dioxide over their life cycle than federal standards allow, according to new research. The findings cast doubt on whether corn residue can be used to meet federal mandates to ramp up ethanol production and reduce greenhouse gas emissions.

Ancient DNA: Barnyard chickens living just a few hundred years ago looked far different from today's chickens

Posted: 18 Apr 2014 11:11 AM PDT

Ancient DNA adds a twist to the story of how barnyard chickens came to be. Analyzing DNA from the bones of chickens that lived 200-2,300 years ago in Europe, researchers report that some of the traits we associate with modern domestic chickens -- such as their yellowish skin -- only became widespread in the last 500 years, much more recently than previously thought.

From quark soup to atoms and stars

Posted: 18 Apr 2014 11:07 AM PDT

Scientists using the atom smasher at the U.S. Department of Energy's Brookhaven National Laboratory have observed a phase transition different than the smooth transition of the early universe from the hot "soup" of subatomic particles to the atoms, made up of neutrons, protons and electrons that are the building blocks of matter.

Δεν υπάρχουν σχόλια:

Δημοσίευση σχολίου