Once on the brink of extinction with only a few fish remaining, Snake River sockeye salmon are regaining the fitness they need to rebuild wild populations. A new analysis shows that naturally spawned offspring of fish saved by a hatchery program are now surviving to return at increasing rate -- high enough to not only sustain the population but also to rebuild it.
The approach is to design synergistic materials by combining two single-atom thick sheets, for example, that act as a photovoltaic cell as well as a light-emitting diode, converting energy between electricity and radiation.
Physicists predict fano resonance in lead-free relaxors: Discovery advances knowledge of poorly understood materials
Scientists predicts that a phenomenon known in physics as Fano resonance can exist in materials that are used in electronic devices. The discovery advances the fundamental understanding of ferroelectric relaxors, which were discovered in the early 1960s but whose properties are still poorly understood.
Anglers across the nation wondering why luck at their favorite fishing spot seems to have dried up may have a surprising culprit: a mine miles away, even in a different state. Scientists have taken a first broad look at the impacts of mines across the country and found that mining can damage fish habitats miles downstream, and even in streams not directly connected to the mines.
Extreme weather events, such as El Niño, can have long-lasting effects on health, according to research. The study, in coastal Peru, shows that children born during and after the 1997-98 El Niño have a lower height-for-age than others born before the event.
Hopes end for levelheaded exemplar from once-leading opinion maker The Herald nails its colours to the mast. Click for (slightly) …
For coral reefs to persist, rates of reef construction must exceed reef breakdown. Prior research has largely focused on the negative impacts of ocean acidification on reef growth, but new research demonstrates that lower ocean pH also enhances reef breakdown: a double-whammy for coral reefs in a changing climate.
Biology trumps chemistry in open ocean: How phytoplankton assimilate limited concentrations of phosphorus
Scientists laid out a new framework based on in situ observations that will allow them to describe and understand how phytoplankton assimilate limited concentrations of phosphorus, a key nutrient, in the ocean in ways that better reflect what is actually occurring in the marine environment. This is important because nutrient uptake is a property of ocean biogeochemistry, and in many regions controls carbon dioxide fixation, which ultimately can play a role in mitigating climate change.
Climate change could lengthen the growing season, make soil drier and decrease winter snowpack in the Lake Michigan Basin by the turn of the century, among other hydrological effects.
Researchers are studying graphene and ammonia to develop high-speed, high-capacity random access memory. The team engineered and tested improvements in the performance of a memory structure known as a ferroelectric tunnel junction.