A medication commonly taken for Type II diabetes, which is being found in freshwater systems worldwide, has been shown to cause intersex in fish – male fish that produce eggs. The medication is found to be widespread in freshwater.
Chinese scientists say they've genetically modified human embryos for the very first time. The team attempted to modify the gene responsible for beta-thalassaemia, a potentially fatal blood disorder, using a gene-editing technique known as CRISPR/Cas9. Gene editing is a recently developed type of genetic engineering in which DNA is inserted, replaced, or removed. Here, experts weigh-in with ethical questions and considerations.
Researchers have shown that a laser-generated microplasma in air can be used as a source of broadband terahertz radiation. They demonstrate that an approach for generating terahertz waves using intense laser pulses in air can be done with much lower power lasers, a major challenge until now. They have exploited the underlying physics to reduce the necessary laser power for plasma generation.
In May 2014, a group of recreational divers spotted an adult lionfish -- the voracious invader Pterois volitans -- in the rocky reefs of southeastern Brazil. A single fish caught with a hand spear off the Brazilian coast is making big waves across the entire southwestern Atlantic. In May 2014, a group of recreational divers spotted an adult lionfish--the voracious invader Pterois volitans--in the rocky reefs of southeastern Brazil. A group of researchers, including scientists from the California Academy of Sciences, used genetic analysis to link the lionfish to the infamous Caribbean population of invaders. In light of a separate study detailing the lionfish penchant for eating critically endangered Caribbean reef fish, news of lionfish in Brazilian waters raises alarm for Atlantic reefs and the region's already-threatened marine life. The discovery is published this week in PLOS ONE.
This image shows a colony of Trichodesmium. Scientists have found something they can't quite explain in one of the most barren environments on Earth: a bacterium whose DNA sequence contains elements usually only found in a much higher organism.
In the most comprehensive study ever on the impact of smoking on cardiovascular disease in older people, epidemiologist Dr. Ute Mons from the German Cancer Research Center (Deutsches Krebsforschungszentrum, DKFZ) analyzed 25 individual studies, compiling data from over half a million individuals age 60 and older.
Predatory fish are extremely important for maintaining a balanced ecosystem on the Great Barrier Reef. New research shows that fishing is having a significant impact on the make-up of fish populations of the Great Barrier Reef.
New research from the Monell Center reveals that tumor necrosis factor (TNF), an immune system regulatory protein that promotes inflammation, also helps regulate sensitivity to bitter taste. The finding may provide a mechanism to explain the taste system abnormalities and decreased food intake that can be associated with infections, autoimmune disorders, and chronic inflammatory diseases.