| The lake sturgeon is a fish of temperate waters and is found only in the Northern Hemisphere in North America. |
| The country is the largest net exporter of beef in the Northern Hemisphere. |
| A stronger seasonal contrast with cooler Northern Hemisphere winters likely intensified northeast trade winds. |
| A single genus, acer, includes from sixty to seventy species, widely distributed over the Northern Hemisphere. |
| Ever since the winter solstice last Dec. 22, the days have been getting longer in the Northern Hemisphere and the noonday sun has climbed higher in the sky. |
| Two centuries ago, much of the Northern Hemisphere was emerging from a little ice age. |
