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Wednesday, October 29, 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News

Dietary cocoa flavanols reverse age-related memory decline in mice

Posted: 26 Oct 2014 04:50 PM PDT

Dietary cocoa flavanols —- naturally occurring bioactives found in cocoa —- reversed age-related memory decline in healthy older adults, according to a new study. Flavanols are also found naturally in tea leaves and in certain fruits and vegetables.

Climate change caused by ocean, not just atmosphere

Posted: 25 Oct 2014 12:27 PM PDT

Most of the concerns about climate change have focused on the amount of greenhouse gases that have been released into the atmosphere. A new study reveals another equally important factor in regulating Earth's climate. Researchers say the major cooling of Earth and continental ice build-up in the Northern Hemisphere 2.7 million years ago coincided with a shift in the circulation of the ocean.

Ebola's evolutionary roots more ancient than previously thought

Posted: 24 Oct 2014 07:12 AM PDT

A new study is helping to rewrite Ebola's family history. It shows that Ebola and Marburg are each members of ancient evolutionary lines, and that these two viruses last shared a common ancestor sometime prior to 16-23 million years ago.

A 'Star Wars' laser bullet -- this is what it really looks like

Posted: 22 Oct 2014 07:35 AM PDT

Action-packed science-fiction movies often feature colourful laser bolts. But what would a real laser missile look like during flight, if we could only make it out? How would it illuminate its surroundings?

Let there be light: Evolution of complex bioluminescent traits may be predictable

Posted: 21 Oct 2014 10:50 AM PDT

A longstanding question among scientists is whether evolution is predictable. A team of researchers from University of California Santa Barbara may have found a preliminary answer. The genetic underpinnings of complex traits in cephalopods may in fact be predictable because they evolved in the same way in two distinct species of squid.

Stone Age tools: Innovation was local, not imported, in Eurasia more than 300,000 years ago

Posted: 25 Sep 2014 11:12 AM PDT

Analysis of stone artifacts from the excavation of a 300,000-year-old site in Armenia shows that new technologies evolved locally, rather than being imported from outside, as previously thought.

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