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Science News for June 21, 2005


Pitt and Bell Labs researchers send 'heavy photons' over world-record distances

Researchers from Pitt and Bell Labs have successfully created a two-dimensional semiconductor structure that allows excitons to exist longer and travel farther than previously recorded. This breakthrough could lead to the development of excitonic circuits for optical communication, enabling photons to be converted directly into excitons.

SourceUniversity of Pittsburgh·JournalPhysical Review Letters·DateJun 21, 2005

From butterflies to freshwater supplies

The Stanford Institute for the Environment has awarded a total of $640,000 in grants to support innovative interdisciplinary research. Five proposals have been selected for funding, including projects focused on reintroducing butterflies to campus lands and assessing agricultural-urban water markets in India.

Study: Harmless virus kills some cancers

Researchers have found that adeno-associated virus type 2 (AAV2) can selectively kill cancer cells while leaving healthy cells intact. The study suggests that AAV2 recognizes abnormal cancer cells and induces apoptosis, making it a promising candidate for an anti-cancer therapy.

Assuring the supply of vaccines

The National Vaccine Advisory Committee (NVAC) proposes several key strategies to stabilize immunization financing, including expanded funding for vaccine programs and improved reimbursement structures. The NVAC also recommends expansion of the Vaccines for Children Program to include underinsured children in all public health clinics.

SourceElsevier Health Sciences·JournalAmerican Journal of Preventive Medicine·DateJun 21, 2005

Study strengthens link between Foxp2 gene and language development

Researchers have found that disruption of the Foxp2 gene affects the ability of infant rodents to emit ultrasonic vocalizations, which is crucial for social communication. The study suggests that Foxp2 subsumes communication across species, enabling researchers to learn about human speech and articulation.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalProceedings of the National Academy of Sciences·DateJun 21, 2005

Manatee eyes could be window to health status

Scientists are exploring the relationship between manatee tears and blood vessel formation to better understand the animals' immune system. The study found that manatees have a thick, mucusy tear film rich in antimicrobial components, which may help protect against pathogens.

SourceUniversity of Florida·JournalVeterinary Ophthalmology·DateJun 21, 2005