Health

Blood donors needed as cold weather freezes U.S. supply

(HealthDay)—The U.S. blood supply is expected to drop to dangerously low levels as sub-zero weather in many parts of the country forces cancellation of crucial blood drives, American Red Cross officials warn.

Parkinson's & Movement disorders

Bicycling 'overloads' movement networks with Parkinson's

(HealthDay)—Bicycling suppresses abnormal beta synchrony in the Parkinsonian basal ganglia, according to a study published online Sept. 11 in the Annals of Neurology.

Health

Cold snap in Eastern Europe kills more than 650

(AP) -- More than 650 people have died during a record-breaking cold snap in Eastern Europe, authorities said Wednesday, as officials in the Czech Republic blamed two massive car crashes on blinding snow.