A new study has revealed the presence of radioactive contaminants in coal ash from all three major U.S. coal-producing basins - levels of radioactivity in the ash were up to five times higher than in normal soil, and up to 10 times higher than in the parent coal itself because of the way combustion concentrates radioactivity.

The finding raises concerns about the environmental and human health risks posed by coal ash, which is currently unregulated and is stored in coal-fired power plants' holding ponds and landfills nationwide.

Many parents and caregivers believe that multi-sensory stimulation during infancy promotes developmental growth and learning, but researchers who conducted eye movement experiments on preverbal infants show that this is not always true.

The team discovered that 8 to 10 month old infants could learn basic abstract rules, such as sequences, but only when the audio and visual stimuli were “congruently” or “consistently” paired. If a smiling face was paired with a crying sound, the infants were confused, and they did not learn the rule.

The findings indicate that having both visual and audio inputs—or more than one sensory stimulation—does not guarantee successful learning. They have to match each others’ nature.

An international team of researchers has sequenced the first complete genome of an Iberian farmer, which is also the first ancient genome from the entire Mediterranean area. This new genome allows to know the distinctive genetic changes of Neolithic migration in Southern Europe which led to the abandonment of the hunter-gatherer way of life.

The study is led by the Institute of Evolutionary Biology, a joint center of the Spanish National Research Council (CSIC) and the Universitat Pompeu Fabra (Barcelona, Spain), in collaboration with the Centre for GeoGenetics in Denmark. The results are published in the Molecular Biology and Evolution journal.

Green frogs in the suburbs are undergoing a gender switch - but it isn't pesticides doing it, according to a new study in Proceedings of the National Academy of Sciences, the same journal that set off the craze in thinking pesticides were causing frogs to change sex, by letting a member walk a study through peer review for a friend of his, by not mentioning that study had no data.

The recovery of waste heat in all kinds of processes will lead to making established processes more energy-efficient and more environmentally friendly.

The Spin Seebeck effect (SSE) is a rudimentarily understood effect which allows for the conversion of a heat flux into electrical energy, even in electrically non-conducting materials. A team of physicists at Johannes Gutenberg University Mainz (JGU), the University of Konstanz, TU Kaiserslautern, and the Massachusetts Institute of Technology (MIT) have now succeeded in identifying the origin of the Spin Seebeck effect.

Midday naps are associated with reduced blood pressure levels and prescription of fewer antihypertensive medications, according to research presented at ESC Congress today by Dr Manolis Kallistratos, a cardiologist at Asklepieion Voula General Hospital in Athens, Greece.