A new study reveals that the catch of food fish species in the North Atlantic has decreased by more than half over the last fifty years, despite a tripling in fishing effort. This decline is attributed to the increasing pressure on marine ecosystems, leading to reduced productivity and mass extinctions among large predatory fish.
A study of Maya children in the US found nearly half are overweight and 42% are obese, with TV and computer gaming linked to a higher risk. The disparity is attributed to American acculturation and socioeconomic factors, highlighting the need for targeted interventions.
The American Association for the Advancement of Science (AAAS) has honored several individuals with prestigious awards, including William T. Golden for his lifetime achievement in science policy, Norman E. Borlaug for his Nobel Peace Prize-winning work on global food security, and Guenther Bauer for his contributions to international s...
Researchers developed new tests to supplement the SAT and GMAT, measuring practical and creative abilities. The results indicate that these tests can improve the ability of standardized tests to predict student success and reduce racial and ethnic score differences.
A Rutgers scientist is linking global climate change to changes in ice and snow cover, citing convincing evidence of warming trends. The scientist's data shows that the amount of snow covering in North America and Eurasia has been shrinking over the years.
Glacier melting and climate change are leading to sea level rises, with the world's glaciers shrinking faster than they did in recent millennia. The International Panel on Climatic Change (IPCC) projections are considered too low due to glacier sensitivity and hydrological cycle changes.
Researchers in Alaska are studying a shift in shark populations due to climate change, with salmon sharks and Pacific sleeper sharks increasing in numbers. The declining number of sea lions, seals, and other pinnipeds suggests that top predators have shifted from orcas and pinnipeds to orcas, sharks, and decreasing numbers of the latter.
A brain imaging study has pinpointed cognitive mechanisms behind age-related memory difficulties and confirmed that certain factors can be reversed with the right guidance. Older adults have underutilized cognitive resources in the left frontal cortex that can be harnessed for more efficient memory processing.
Physicist Maria Spiropulu proposes a new reality theory that unifies gravity and electromagnetism. Researchers are using high-energy particle collisions to detect the signature of extra dimensions, which may reveal a mysterious sister world with compacted or finite dimensions.
A revised estimate of glacier ice loss suggests a 20% contribution to observed sea level rise, with some glaciers smaller than they have been in thousands of years. Glacier melting could contribute up to 0.65 feet to sea level this century, surpassing the IPCC's estimated 0.16-0.36 feet.
A study of recently bereaved older people found that those with weaker spiritual beliefs were more likely to experience depression symptoms. However, moderate believers showed that spiritual help can be beneficial in coping with loss, and strong believers demonstrated a strong sense of personal meaning.
Lawrence Livermore physicist Bruce Remington explores using lab astrophysics to recreate supernovae explosions, understand cosmic rays, and study black holes. Lab experiments also aim to probe planet interiors and gamma-ray bursts.
The American Association for the Advancement of Science (AAAS) has named Dr. Etta Z. Falconer and Dr. James H.M. Henderson as recipients of the Mentor Award for Lifetime Achievement. Both awardees have made significant contributions to increasing diversity among doctoral students in the sciences.
Borlaug's work in Mexico led to the development of high-yield, low-pesticide wheat, increasing crop production by 7000% in just a few decades. His efforts have since expanded to sub-Saharan Africa and India, helping small-scale farmers adopt improved agricultural techniques
Researchers found that the catch of key food species has decreased by over half, despite increased fishing effort. The impact has undermined the ocean's ability to sustain further catches, with invertebrates replacing large predatory fishes at the top of marine food webs.
Researchers develop algorithm to straighten arcs in a plane without parts bumping into each other. The breakthrough applies to robotics, antennas on satellites, and protein chains, offering insights for engineers and biologists.
The University of Michigan Medical School is addressing mounting clinical and economic pressures through its Innovations in Medical Education program. The four-part mission focuses on improving teaching in medical education, with research documenting increased productivity in publication and teaching effectiveness.
Researchers discuss biological and cultural factors behind global obesity trend, citing rapid urbanization and technology as contributing causes. Childhood malnutrition and stunted growth are paradoxically linked to adult obesity in many places.
Researchers found that cognitive training could improve memory performance in older adults by increasing activity in the frontal cortex, a region responsible for higher-level intellectual processing. This approach was more effective than simply providing support strategies to overcome non-selective recruitment of cortical regions.