Countries have long used balloons to extend intelligence collection though more sophisticated technologies have replaced them in recent years, says drone researcher Paul Lushenko.
In a New York Times guest essay, Nicholas Mulder considers why the Russian economy has proven relatively resilient under sanctions.
Sunghoon Kim
As the experimentalists changed the electric field, it is likely that different parts of the material underwent the metal-to-insulator transition at different values of the electric field because of a small number of inherent imperfections. Consequently, the flowing electrons must find a path through these “islands” of insulating regions, embedded in a “sea” of metal.
In the experimental metal-to-insulator transition, even a tiny amount of imperfection plays a key role in revealing the universal physics.
Nuria Rodríguez/Provided
Fieldwork and sampling in Tirez lagoon, central Spain, when the lagoon was still active (left) and after drought and desiccation, with only salt crusts remaining (right).
White guests favor Airbnb properties with white hosts, but are more inclined to rent from Black or Asian hosts if they see featured reviews from previous white guests, Cornell research finds.
John Marston
The researchers scrutinized tree ring samples recovered from the Midas Mound Tumulus at Gordion, a human-made 53-meter-tall structure located west of Ankara, Turkey.
An interdisciplinary collaboration used tree ring and isotope records to pinpoint a likely culprit: three straight years of severe drought in an already dry period.
Professor Joseph Margulies says that while President Biden was right to call for police accountability in the State of the Union address, we all share responsibility for police culture.
Provided
Isaac Kramnick at a sanatorium where he was treated for rheumatic fever.