Just as drones have transformed wildlife conservation and illegal fishing patrols, they may soon make a big impression on forest conservation. Unmanned aerial vehicles could replace people in monitoring forest regeneration projects in the tropics, with consequent savings in time and money as well as much-improved data collection.
In quantum cryptography, encoding entangled photons with particular spin states is a technique that ensures data transmitted over fiber networks arrives at its destination without being intercepted or changed. However, as each entangled pair is usually only capable of being encoded with one state (generally the direction of its polarization), the amount of data carried is limited to just one quantum bit per photon. To address this limitation, researchers have now devised a way to "hyperentangle" photons that they say can increase the amount of data carried by a photon pair by as much as 32 times.
Magnets are at the heart of much of our technology, and their properties
are exploited in a myriad ways across a vast range of devices, from
simple relays to enormously complex particle accelerators. A new class
of magnets discovered by scientists at the University of
Maryland (UMD) and Temple University may lead to other types of magnets
that expand in different ways, with multiple, cellular magnetic fields,
and possibly give rise to a host of new devices. The team also believes
that these new magnets could replace expensive, rare-earth magnets with
ones made of abundant metal alloys.