The massive dust cloud arrived in Puerto Rico the Sunday before last, sweeping in and staining the evening sky a milky white. Monday and Tuesday, the air grew heavier with dust by the hour. Late on ...

Scientists in Japan have used a global climate model to show that dust from land without snow cover in the Arctic is a major source of particles that form ice crystals in Arctic low-level clouds. This ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.