Infants of smoking mothers who breastfeed have higher urine levels of cotinine, a substance produced by nicotine breakdown, compared to bottle-fed children. The study highlights the importance of helping mothers quit smoking during pregnancy and nursing.
Researchers have found that stunted brain regions may cause severe autism symptoms, while smaller regions may lead to milder symptoms in close relatives. The study used magnetic resonance imaging to compare the brains of identical twins with and without autism.
A study by Professor Geoffrey Underwood found that police presence is the least anger-provoking and discourtesy is the greatest trigger for road rage. Drivers who experienced near accidents reported increased anger levels, particularly when they were not at fault.
Researchers discovered that a lack of iron limits phytoplankton growth in central California waters, impacting the entire marine food chain. This finding challenges existing climate change models and highlights the importance of iron in ocean carbon storage.
Researchers have developed a system that detects trace amounts of TNT in seafloor sludge, enabling the identification of unexploded bombs. This technology could save time and resources in cleaning up sites contaminated with live explosives.
Astronomers have discovered expanding gas clouds thrown off by nuclear eruptions in stars, which provide reliable distances to these stars. The Hubble Space Telescope has captured detailed images of two nova shells, revealing structure and asymmetry, including polar blobs and equatorial rings.
A study by Pat Rusin and her colleagues at the University of Arizona found that toilet seats were consistently cleaner than kitchen surfaces, including sinks, tap handles, and chopping boards. The researchers believe this is due to the dry environment of toilet seats, which are less conducive to bacterial growth.