Capuchin monkeys have been found to cooperate in obtaining food by working together and sharing the rewards. This study by Frans de Waal and Michelle Berger suggests that reciprocity is a fundamental feature of human society and has implications for understanding evolutionary cooperation.
Researchers at the University of Wisconsin-Madison have designed a new type of molecule that exhibits wide-spectrum antimicrobial activity, including effectiveness against resistant bacteria. The synthetic beta-peptides mimic naturally-occurring peptides found in nature and have shown promise in laboratory tests.
A University of California, Berkeley scientist challenges the central tenet of cancer research that genetic mutations drive cancer. Instead, he proposes that aneuploidy, chromosomal duplication, is the primary cause of cancer. Experimental evidence supports this theory, showing cancer cells exhibit massive protein expression changes.
The Ulysses spacecraft detected a dramatic change in solar wind and magnetic field lines, revealing comet tails that are likely billions of miles long. This finding opens up new ways to study comets and gain insights into the solar system's birth.
Researchers studied Atlanta, Salt Lake City, and other cities using Landsat data, finding that adding trees and light-colored roofs can cool city temperatures. Computer models also simulated land use changes to predict stormwater runoff patterns and urban growth in abandoned strip mines.
A new study found that soy foods can help lower cholesterol and reduce the risk of heart disease without stimulating harmful hormone activity. The research involved two groups of people on low-fat diets with or without soy, revealing no evidence to support claims of estrogenic effects.
Researchers from Johns Hopkins University and George Washington University found 40 cases of tumors in sharks and related fishes, including chondromas. The study casts doubt on the effectiveness of shark cartilage as a cancer cure, highlighting potential risks to patients and marine ecosystems.
Damage to nerves caused by injury can lead to slow and poor recovery. However, a new study suggests that electrical stimulation can enhance nerve regeneration, allowing for faster healing in just two to three weeks. Researchers hope to test this method on people with nerve damage.
A study found that women are three times more likely to have severe arthritis but less likely to discuss joint replacement surgery with their doctors. Women experience worse symptoms and greater disability due to arthritis, yet they receive fewer replacements.
Researchers found that bypass surgery significantly reduces mortality rates for diabetic patients undergoing revascularization procedures. The study, BARI, compared coronary artery bypass graft surgery with percutaneous transluminal coronary angioplasty in patients with multivessel coronary artery disease.
A new study has found that beta radiation treatment can prevent repeat blockages in heart vessels following angioplasty. The treatment was tested on patients who underwent balloon angioplasty for coronary artery disease and showed a significant reduction in recurrent blockage rates.
A study of 74 healthy African-American men found that hard-driving personalities can be beneficial when accompanied by job control and a fair amount of advancement opportunities. In contrast, those with little control over their workload and futures experienced increased cortisol levels, a stress hormone linked to health risks.
A new study reveals that the LDL receptor plays a key role in reducing the production of LDL cholesterol and removing it from the blood, providing insights into familial hypercholesterolemia. The research also explains how statins lower blood cholesterol levels by increasing LDL receptor activity.