Saturday Citations: Cruise ship pathogen spread in ancient Rome; Plus: Pomegranates, retinal implants

A new analysis has revealed a global decline in fish growth over the last century, with scientists warning that overfishing and environmental change are eroding the biological foundations of many fisheries. Helen Yan led the study as part of her Ph.D. program at James Cook University. She said human-driven pressures are causing large-scale changes to the ecologies and life histories of fishes.

An international research team led by DTU has developed a new magnetic material that features a stable internal magnetic structure, almost no external magnetic field, and retains these properties above room temperature. These characteristics may be important for future generations of electronic technologies, for example, within fields where magnetic properties are used instead of electrical charge to process information—so-called spintronics. The results have been published in the journal Nature

They already have the bill of a duck, the tail of a beaver, lay eggs like reptiles and have venom like snakes.

As global warming accelerates, extreme heat waves are causing widespread death of tropical reef corals. Most corals rely on tiny algae cells living within their tissues that photosynthesize and produce energy. Corals use this energy to build their skeletons that create the reef structure.