During the quiet hours of sleep, your brain is hard at work. It sends out tiny electrical signals that ripple across networks ...

President Donald Trump's top negotiator working on Russia's war in Ukraine predicted Trump would have a "successful" phone call with President Vladimir Putin on Monday, saying he believed the ...

Meet 33 innovative leaders who are using their voices and talents to tackle the planet’s most pressing issues. For decades, the Congo Basin was largely invisible to climate science. Now, a new ...