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Study: One quarter of tweets 'worthless'

Study: One quarter of tweets 'worthless'

PITTSBURGH, Feb. 1 (UPI) -- Twitter users say they find almost a quarter of tweets not worth reading and only slightly more than a third are worthwhile, a U.S. study found.

The rejected can detect 'fake smiles'

MIAMI, Oct. 31 (UPI) -- Those experiencing rejection can better discern "fake smiles" from genuine ones, U.S. researchers said.

Racial facial recognition theory offered

OXFORD, Ohio, Aug. 15 (UPI) -- U.S. scientists have developed another theory of why people often experience difficulty in distinguishing between different racial groups.

Canadian blood trial to go forward

TORONTO, Feb. 21 (UPI) -- Prosecutors in Canada plan to go ahead with the trial of a former director of the Red Cross and others allegedly involved in distributing HIV-tainted blood.

Health Tips ... from UPI

Some apples are better at keeping doc away, preparing for safe summer travel, and other stories of modern health.
ALEX CUKAN

Health Tips ... from UPI

Peppermint, cinnamon may help fight road rage; tips for safe summer sports, and other news of modern health.
LIDIA WASOWICZ, UPI Senior Science Writer

Health Tips ... from UPI

Money may buy short-term happiness for disabled; onions may help stave off osteoporosis, and other news of modern health.
LIDIA WASOWICZ, UPI Senior Science Writer

Health Tips ... from UPI

Walnuts may be good for the heart; drama therapy may briefly return cognitive clarity to Alzheimer's patients, and other news of modern health.
LIDIA WASOWICZ, UPI Senior Science Writer

Health Tips ... from UPI

Elderberry extract may help ease flu misery; radiation has a good side that may benefit health, and other news of modern health.
LIDIA WASOWICZ, UPI Senior Science Writer

Health Tips ... from UPI

Chamomile tea may help relieve a variety of ailments, researchers find four popular diets are all difficult to stick with, and other stories of modern health.
ALEX CUKAN

Health Tips ... from UPI

Cherries may help protect against diabetes; tight deadlines at work can increase heart risk, and other news of modern health.
ALEX CUKAN

Health Tips ... from UPI

Christmas tree bark may help fight arthritis; C-section may make subsequent vaginal delivery riskier, and other news of modern health.
LIDIA WASOWICZ, UPI Senior Science Writer

Health Tips ... from UPI

Purple berries healthiest; infertility treatments questioned, and other news of modern health.
LIDIA WASOWICZ, UPI Senior Science Writer

Health Tips ... from UPI

Those free makeovers at cosmetics counters may color your face shade of bacteria; new technology can prevent stray surgical burns, and other news of modern health.
LIDIA WASOWICZ, UPI Senior Science Writer

Health Tips ... from UPI

Genetic variation lessen effectiveness of asthma treatment for some patients; using over-the-counter cold medicines could save the nation billions, and other news of modern health.
LIDIA WASOWICZ, UPI Senior Science Writer
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Wiki

Michael Bernstein (b.1949) is an American-born historian of science, residing in Chicago.

Bernstein is perhaps best known for his novel interpretation of Book II of Euclid's Elements, particularly Proposition II.14, for which he proposes a radical re-interpretation.

Bernstein's historical perspective is said to have influenced the work of Amir Aczel.

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "Michael Bernstein."
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