Researchers used eggshells from an enormous flightless bird to determine the timing and cause of Australia's megafaunal extinction event. The study suggests human activities, such as burning, disrupted ecological balance, leading to the demise of over 85% of large animals.
The Florida Regional Competition of the National Ocean Sciences Bowl will be held in Fort Pierce, with 25 teams competing for scholarships and awards. The competition aims to broaden awareness and understanding of ocean research among high school students.
A new study reveals that fruit-fly mating conflicts lead to continual changes in genes, a game of leapfrog that could have significant evolutionary consequences. Females frequently alter their genetic profiles to adjust the males' competitive odds.
This book provides a thorough understanding of marine fish culture, including commercial production statistics, water treatment, rearing units, and nutrition for various species. With over 4,000 references, it is an essential resource for researchers, educators, and aquaculture professionals.
Researchers at Johns Hopkins University have linked specific gene mutations to the growth of fatal brain tumors in flies, mirroring human cancer progression. The study's findings suggest that a key signaling pathway may be responsible for tumor growth, offering potential new avenues for cancer treatment.
Astronomers have discovered large numbers of previously unknown stars in the Virgo Cluster using dying green stars as tools. The findings suggest that at least 22% of Virgo's light is coming from these hidden stars, and could affect estimates of universe mass.
Researchers sequenced the complete genome of a form of HIV from India, finding significant variation in genes for proteins on the outer envelope of the virus. This suggests that currently favored approaches to vaccine development may not work, and that a new approach may be needed.
A newly discovered gene mutation has been found to shut down the MHC-I transport system in tumor cells, making them less recognizable to the immune system. This could lead to a way to increase the immune system's sensitivity to tumors, potentially improving cancer treatment options.
Research suggests that individuals with high anxiety sensitivity are more likely to develop psychological problems or physical illness. Women cadets with high anxiety sensitivity were particularly likely to end up in counseling during basic training.
Astronomers have discovered a large number of slow X-ray pulsars in supernova remnants, which are believed to be neutron stars with huge magnetic fields. These so-called magnetars rotate much slower than expected and are invisible to radio probes.
A recent study suggests that early human activity in Australia may have contributed to the extinction of most large animal species. The research team used dating techniques to determine that an ostrich-sized bird called Genyornis newtoni went extinct around 50,000 years ago.
A Wake Forest University professor will assess a national campaign against smokeless tobacco, which has been linked to rising sales of moist snuff among baseball players. The study aims to determine the program's impact on major league baseball and its partners.
Four Harvard physicians recommend a moratorium on reducing the national cesarean section delivery rate due to concerns about maternal and infant safety. They argue that economic forces are driving the goal, rather than patient well-being.