أدى هطول الأمطار إلى انتعاش ربيع منطقة آليان بريف جل آغا وكركي لكي في الجزيرة، وذلك بعد سنوات من الجفاف، لتتحول طبيعة هذه ...

The extreme speed at which light moves, and the fact that photons do not tend to interact with transparent matter, is of enormous benefit to mankind. It allows us to see deep into the Universe and to ...

What is ACS Program-in-a-Box? Gather to watch a 75-minute interactive livestream broadcast from ACS Headquarters featuring technical presentations from experts, Q&A, "ChemClash" chemistry trivia, ...

Plant responses to light are multiple. Light is an energy source, converted to sugars by photosynthesis. It is also a signal sensed by specific photoreceptors for red, blue and UV-B radiation. Absence ...