The clean-energy challenge redux
Search and Discovery
Nuclear reactions produce a plethora of short-lived artificial isotopes. Figuring out what they look like has been a challenge.
Issues and Events
A dedicated satellite would provide global coverage to improve understanding of the hydrologic cycle and inform water-use and risk-management strategies.
Though quantum computers are still a decade or more away, NIST is finalizing new encryption standards now to replace current vulnerable protections.
Recent studies of a model system—a fluid in a box heated from below and cooled from above—provide insights into the physics of turbulent thermal convection. But upscaling the system to extremely strong turbulence remains difficult.
Proponents of Project Plowshare argued that using nuclear explosives for peaceful means offered technical and economic advantages. But getting the biggest bang for the buck didn’t outweigh the varied environmental and sociopolitical costs of their use.
The winged mammals produce high-frequency sounds and listen to their echoes from surrounding objects to track down insects to eat. Counterintuitively, the interference from the echoes of clutter nearby can help.