What drives Yellowstone's massive elk migrations?

Every spring, tens of thousands of elk follow a wave of green growth up onto the high plateaus in and around Yellowstone and Grand Teton national parks, where they spend the summer calving and fattening on fresh grass. And every fall, the massive herds migrate back down into the surrounding valleys and plains, where lower elevations provide respite from harsh winters.

* This article was originally published here

Good hemp seed or 'garbage'? Growers say standards needed

A unit of wheat is called a bushel, and a standard weight of potatoes is called a century. But hemp as a fully legal U.S. agricultural commodity is so new that a unit of hemp seed doesn't yet have a universal name or an agreed-upon quantity.

* This article was originally published here