Ancient Earth was a water world

Across the ages, sea levels have risen and fallen with temperatures—but Earth’s total surface water was always assumed to be constant. Now, evidence is mounting that some 3 billion to 4 billion years ago, the planet’s oceans held nearly twice as much water—enough to submerge today’s continents above the peak […]

‘On the verge of a breakdown.’ Report highlights women academics’ pandemic challenges

Since early in the COVID-19 pandemic, researchers and policymakers have raised serious concerns about impacts on women, including those pursuing careers in academic science. Today, the U.S. National Academies of Sciences, Engineering, and Medicine adds to the chorus with its report on how women academics in science, technology, engineering, math, […]