In a series of social media posts, President Donald Trump revealed higher tariff rates for six more countries as part of his ...

Budget hawks have fretted for decades about America’s deficits and debt, repeatedly advising our government to embrace ...

Susan Lendroth Amid the rise of digital communication such as texts, emails, and emojis, the act of writing a letter has ...

Organic materials can tune the optical properties in layered (2D) hybrid perovskites, although their impact on photophysics is often overlooked. Here, we use transient absorption spectroscopy to probe ...