According to Bredt's rule, double bonds cannot exist at certain positions on organic molecules if the molecule's geometry deviates too far from what we learn in textbooks. This rule has constrained ...
A helicopter pilot lost control of his Robinson R44 at an airport in Texas, USA. The spinning aircraft collided with a small plane. The pilot was lucky.
Discover how turboelectric jet engines are reviving supersonic travel, promising faster, more efficient, and sustainable air journeys. Hybrid electric ...
Developed by Spanish scientists, the proposed model is intended to reduce yield losses caused by the fact that north-south aligned single-axis trackers are often deployed on uneven east-west slopes.