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Science News for August 17, 2005


Nose odors and mouth odors: The brain distinguishes

Researchers found that brain responds differently to odors introduced through the nose versus the mouth, with distinct brain regions activated. The study suggests that olfactory referral illusion is robust and cognitively impenetrable, and may play a role in flavor perception.

SourceCell Press·JournalNeuron·DateAug 17, 2005

Supernova 1987A: Fast forward to the past

Recent Chandra X-ray Observatory observations have given insight into the behavior of the doomed star before it exploded, indicating that the predicted spectacular brightening of the circumstellar ring has begun. The supernova produced a shock wave that rumbled through the cavity, and recent data indicate that this event has started.

SourceChandra X-ray Center·JournalThe Astrophysical Journal Letters·DateAug 17, 2005

Lessons from 2004 point the way in 2008 election

According to Campbell, increased voter turnout was a key factor in the 2004 Republican victory. Nearly 60% of eligible voters participated, with competitive states experiencing higher turnout rates. The study also notes that party polarization and incumbent advantage will play significant roles in the 2008 election.

SourceUniversity at Buffalo·JournalPolitical Science Quarterly·DateAug 17, 2005

Fighting breast cancer

Researchers at Sunnybrook Hospital have developed a unique mouse model that enables scientists to study how breast cancer spreads. By analyzing the genetic makeup of tumour cells, they hope to predict which tumours will metastasize and develop new treatments.

Purdue research shows added calcium benefits women on the pill

A Purdue study found that increasing calcium intake by 200-300mg per day can significantly boost bone mineral density in young women taking oral contraceptives, reducing the risk of osteoporosis. The researchers suggest that this simple change can prevent a significant loss of bone mass, particularly during peak bone development years.

SourcePurdue University·JournalThe Journal of Clinical Endocrinology & Metabolism·DateAug 17, 2005

Researchers make 'embryonic-like' stem cells from umbilical cord blood

A trans-Atlantic team of researchers has successfully created embryonic-like stem cells from umbilical cord blood, a breakthrough that could revolutionize the treatment of serious diseases. The new cell type shares characteristics with both adult and embryonic stem cells, making it an attractive alternative for stem cell therapies.