Avior Hazan

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Evolution vs Natural Selection

Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

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Earth's Oldest Crust Dates to 4.4 Billion Years Ago

Earth's oldest known piece of continental crust dates to the era of the moon's formation.<p>Australia holds the oldest continental crust on Earth, researchers have confirmed, hills some 4.4 billion years old.<p>For more than a decade, geoscientists have debated whether the iron-rich Jack Hills of western …

Space Pictures This Week: Cigar Galaxy, Speedy Star

Auroras dance, a speedy star leaves a bow shock in its wake, and Martian dunes glimmer in this week's roundup of best space pictures.<p>Looking to get away from it all? How about a trip to Bouvet Island, seen in the above satellite image released on February 26 by NASA.<p>Prepare for a long trip if you …

Blood test could detect early signs of dementia, scientists say

Scientists have developed a new blood test that they claim could detect whether or not a person will develop dementia within three years.<p>Changes in the blood may signify Alzheimer's disease in its earliest stages, researchers found.<p>A study, published in the journal Nature Medicine, identified 10 …