Stem cell therapy helps AMD patients see again

In the United States, age-related macular degeneration is one of the most common causes of permanent vision loss in adults who are 60 and older. It affects the macula, the central region of the retina that contains tightly packed cells used for sharp, detailed color vision. Roughly 20 million adults in the country are living…

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Hidden copper switch supercharges green ammonia production

Researchers at Tokyo Metropolitan University have uncovered how a catalyst used in a promising industrial reaction helps generate ammonia, a major component of fertilizer. In this process, copper oxide acts as an important catalyst in the electrochemical nitrate reduction reaction, a more environmentally friendly approach compared to the traditional Haber-Bosch method. The team found that…

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AI detects a secret lion roar no one knew existed

A recent investigation has revealed that African lions use two separate kinds of roars, not just one. This finding is expected to play an important role in improving how conservation groups track and study these big cats. Researchers at the University of Exeter uncovered a previously unrecognized “intermediary roar” that appears alongside the well-known full-throated…

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The surprising reason bees replace their queens

What sounds like the storyline of a medieval palace drama often plays out in real-life honey bee colonies. A once-strong ruler weakens, her supporters turn against her, and a dramatic change in leadership follows. For bees, these events are not rare. These internal takeovers carry both risks and benefits for colonies and for the agricultural…

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