A worldwide network of Argo floats gives scientists an unprecedented understanding of the ocean depths. Argo floats descend and ascend through the top 2,000 meters of the ocean, collecting observations as they move.
For some states, the coldest day of the year usually occurs near the start of winter, while for others it comes near the end. This map reveals when history says your state will have its coldest day of the year.
The spotlight may have been on California this past summer, but groundwater reservoirs—often the back-up for surface water supplies during prolonged drought—are in decline across much of the southern United States. Meanwhile, people are using millions of gallons of water per day in regions dependent on groundwater aquifers
Since we last covered the California drought, conditions in the state have stayed, well, dry—very dry. Statewide, total precipitation is about equal to or below the lowest three-year period since 1895.
More than halfway through August, the Atlantic Ocean has seen just two named storms. Despite the availability of heat energy at the sea's surface, atmospheric conditions have not been favorable for storm development.