Read on for a head-to-head comparison of Royal Caribbean and Celebrity Cruises, covering each brand’s onboard experience, ...

Two new studies of the North and South Poles remind us that the global climate system remains unpredictable, defying ...

Many of us know Antarctica as a land of ice and not much else. But hidden beneath the miles of glaciers and ice sheets lies a ...

For further information, please see our April Arctic sea ice extent averaged 13.91 million square kilometers (5.37 million ...

When does "anomalous weather" become "a new climate"? The moment that variations in a specific climate variable turn into the ...

NewsNation Chief Washington Anchor and On Balance host Leland Vittert gives you an early look at tonight’s 9 p.m. ET show.