Who Gets to Block the Sun?

Stardust sold geoengineering to investors. Now it needs to sell it to the public.

Ytterbium atomic clock could open a new window on fundamental physics

For the first time, an international team of physicists has successfully harnessed a rare orbital transition in atoms of ...

Helical liquid crystals can flip light's chirality under ultralow electric fields

The direction in which the electromagnetic field of circularly polarized light rotates can be easily reversed by applying a ...
Harvard Business School

Navigating the Jagged Technological Frontier: Field Experimental Evidence of the Effects of Artificial Intelligence on Knowledge Worker Productivity and Quality

By: Fabrizio Dell'Acqua, Edward McFowland III, Ethan Mollick, Hila Lifshitz-Assaf, Katherine C. Kellogg, Saran Rajendran, Lisa Krayer, François Candelon and Karim R. Lakhani ...