A physical effect known as superinjection underlies modern light-emitting diodes (LEDs) and lasers. For decades this effect was believed to occur only in semiconductor heterostructures. Researchers now have found superinjection to be possible in homostructures, which are made of a single material.
If you’ve ever spent some time in the Caribbean, you might have noticed that humans are not the only organisms soaking up the sun. Anoles — diminutive little tree lizards — spend much of their day shuttling in and out of shade. But, according to a new study, this behavioral ‘thermoregulation’ isn’t just affecting their body temperature. Surprisingly, it’s also slowing their evolution.
A study reveals shipwrecks off North Carolina’s coast are important habitats for sand tiger sharks, whose population plummeted in the 1980 and 1990s. Photos taken months and even years apart by scuba divers show female sand tiger sharks returning to the same shipwrecks. The photos were uploaded to the citizen-science program Spot A Shark USA which used specialized software to ID the sharks.
A simple change in the choice of grass varieties for lawns of St. Augustinegrass could be a key tool for fending off fall armyworm infestations, according to new research. While no single St. Augustinegrass cultivar rises above the rest in resisting infestation, mixing varieties may confer some benefits, as fall armyworms clearly preferred single-cultivar plantings in a series of lab tests.